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6. Jeon YK, Cheon JE, Kim SK, Wang KC, Cho BK, Park SH: Clinicopathological features and global genomic copy number alterations of pilomyxoid astrocytoma in the hypothalamus/optic pathway: comparative analysis with pilocytic astrocytoma using array-based comparative genomic hybridization. Mod Pathol; 2008 Nov;21(11):1345-56
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  • [Title] Clinicopathological features and global genomic copy number alterations of pilomyxoid astrocytoma in the hypothalamus/optic pathway: comparative analysis with pilocytic astrocytoma using array-based comparative genomic hybridization.
  • Pilomyxoid astrocytoma is a recently identified variant of pilocytic astrocytoma.
  • We studied 11 circumscribed astrocytomas with focal (n=5) or diffuse (n=6) pilomyxoid features and compared them with 17 pilocytic astrocytomas from the hypothalamic/chiasmatic region in children.
  • In one patient, a tumor that recurred after initial surgery had changed from pure-form pilomyxoid astrocytoma to the mixed form.
  • Next, we compared the comprehensive genome copy number changes in the pilomyxoid astrocytoma (n=4) with those in pilocytic astrocytoma (n=6) cases by array-based comparative genomic hybridization.
  • The number of lost clones was larger in pilomyxoid astrocytoma than in pilocytic astrocytoma.
  • Clones located in chromosome 8q24.3 were frequently gained in pilocytic astrocytoma (four of six) and in pilomyxoid astrocytoma (one of four).
  • Clones located in 9p24.3 and 15q26.3 were lost in all of the pilomyxoid astrocytomas and in five of the pilocytic astrocytomas.
  • Those in 8p23.3 showed a copy number loss in three of the pilomyxoid astrocytomas and four of the pilocytic astrocytomas.
  • The frequency of copy number changes was significantly different between pilomyxoid astrocytoma and pilocytic astrocytoma in 47 (3.6%) clones, 20 of them having been located in 2p, 10 in 2q, and 11 in 3q.
  • An unsupervised hierarchical clustering analysis classified the cases into three clusters: one pilomyxoid astrocytoma patient into one cluster, two pilomyxoid astrocytoma patients into another cluster, and six pilocytic astrocytoma patients and one pilomyxoid astrocytoma patient into the third cluster.
  • In conclusion, the presence of mixed-form pilomyxoid astrocytoma, the acquisition of pilocytic astrocytoma features in a recurrent tumor in pure-form pilomyxoid astrocytoma, and the above results of the genome-wide gene copy number analysis suggest that pilomyxoid astrocytoma might be a pathologically and genetically related, aggressive variant of pilocytic astrocytoma with partially different genetic alterations.
  • [MeSH-major] Astrocytoma / pathology. Comparative Genomic Hybridization / methods. Gene Dosage. Hypothalamic Neoplasms / pathology. Hypothalamus, Anterior / pathology. Optic Nerve Neoplasms / pathology
  • [MeSH-minor] Adolescent. Adult. Biomarkers, Tumor / analysis. Brain / pathology. Child. Child, Preschool. Clone Cells. DNA, Neoplasm / genetics. Female. Humans. Immunoenzyme Techniques. Infant. Magnetic Resonance Imaging. Male. Neoplasm Recurrence, Local. Survival Rate. Young Adult

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  • (PMID = 18622384.001).
  • [ISSN] 1530-0285
  • [Journal-full-title] Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
  • [ISO-abbreviation] Mod. Pathol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / DNA, Neoplasm
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7. Crabtree KL, Arnold PM: Spinal seeding of a pilocytic astrocytoma in an adult, initially diagnosed 18 years previously. Pediatr Neurosurg; 2010;46(1):66-70
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  • [Title] Spinal seeding of a pilocytic astrocytoma in an adult, initially diagnosed 18 years previously.
  • Pilocytic astrocytoma (PA) is a slow-growing, well-circumscribed grade I glioma generally considered benign, with a low recurrence rate and an excellent prognosis following complete surgical resection.
  • [MeSH-major] Astrocytoma / secondary. Brain Neoplasms / pathology. Meningeal Neoplasms / secondary. Neoplasm Seeding. Spinal Cord Neoplasms / secondary
  • [MeSH-minor] Adult. Biopsy. Child. Follow-Up Studies. Humans. Laminectomy. Lumbar Vertebrae. Magnetic Resonance Imaging. Male. Thoracic Vertebrae. Time Factors

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  • [Copyright] Copyright 2010 S. Karger AG, Basel.
  • (PMID = 20516744.001).
  • [ISSN] 1423-0305
  • [Journal-full-title] Pediatric neurosurgery
  • [ISO-abbreviation] Pediatr Neurosurg
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Switzerland
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8. Ellis JA, Waziri A, Balmaceda C, Canoll P, Bruce JN, Sisti MB: Rapid recurrence and malignant transformation of pilocytic astrocytoma in adult patients. J Neurooncol; 2009 Dec;95(3):377-382
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  • [Title] Rapid recurrence and malignant transformation of pilocytic astrocytoma in adult patients.
  • Pilocytic astrocytoma is a slow-growing, circumscribed glioma that most frequently occurs within the pediatric population.
  • In general, surgical resection for pilocytic astrocytoma is thought to be curative with tumor recurrence or malignant transformation being relatively rare.
  • However, there have been very few studies specifically looking at the prognosis for adult patients diagnosed with pilocytic astrocytoma.
  • To evaluate the frequency of recurrence and malignant transformation of pilocytic astrocytoma in adults, we performed a retrospective analysis of all adult patients who underwent surgical resection for this tumor at our institution over a period of 10 years.
  • A high rate of malignant transformation was observed in the patients that underwent repeat surgery with 75% (3/4) progressing to anaplastic astrocytoma on pathological examination.
  • This study provides further evidence that the clinical course of a subset of adult patients with pilocytic astrocytoma will not be benign.
  • The potential for rapid tumor recurrence and malignant transformation necessitates careful post-operative follow-up for adult patients with this tumor.
  • [MeSH-major] Astrocytoma / mortality. Astrocytoma / pathology. Brain Neoplasms / mortality. Brain Neoplasms / pathology. Neoplasm Recurrence, Local / mortality. Neoplasm Recurrence, Local / pathology
  • [MeSH-minor] Adult. Cell Transformation, Neoplastic. Female. Follow-Up Studies. Humans. Kaplan-Meier Estimate. Male. Middle Aged. Retrospective Studies. World Health Organization. Young Adult

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  • (PMID = 19533024.001).
  • [ISSN] 1573-7373
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
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9. Francesco F, Maurizio I, Stefano C, Marina S, Ugo S, Massimo S: Trigeminal nerve root entry zone pilocytic astrocytoma in an adult: a rare case of an extraparenchymal tumor. J Neurooncol; 2010 Apr;97(2):285-90
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  • [Title] Trigeminal nerve root entry zone pilocytic astrocytoma in an adult: a rare case of an extraparenchymal tumor.
  • We describe a pilocytic astrocytoma of the CPA that was found to arise from the proximal portion of trigeminal nerve without any anatomic continuity with the brain stem and the cerebellum.
  • [MeSH-major] Astrocytoma / pathology. Cerebellar Neoplasms / pathology. Cerebellopontine Angle / pathology. Cranial Nerve Neoplasms / pathology. Trigeminal Nerve Diseases / pathology
  • [MeSH-minor] Adult. Female. Humans. Magnetic Resonance Imaging

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  • (PMID = 19820900.001).
  • [ISSN] 1573-7373
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] United States
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10. Azad A, Deb S, Cher L: Primary anaplastic pilocytic astrocytoma. J Clin Neurosci; 2009 Dec;16(12):1704-6
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  • [Title] Primary anaplastic pilocytic astrocytoma.
  • We report two adult patients with pilocytic astrocytomas with anaplastic features at initial diagnosis.
  • Pilocytic astrocytomas are low-grade astrocytomas that occur rarely in adults.
  • Initial presentation of a pilocytic astrocytoma with anaplastic features is particularly uncommon and making a definitive diagnosis of pilocytic astrocytoma with anaplastic features can be challenging.
  • It is critical to differentiate glioblastoma (World Health Organization [WHO] grade 4) and pilocytic astrocytoma with anaplastic features (WHO grade 3) from pilocytic astrocytoma (WHO grade 1) as there are significant therapeutic and prognostic implications.
  • Improved therapeutic strategies are required for pilocytic astrocytomas with anaplastic features.
  • [MeSH-major] Anaplasia / complications. Astrocytoma / complications. Brain Neoplasms / complications

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  • (PMID = 19815416.001).
  • [ISSN] 1532-2653
  • [Journal-full-title] Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia
  • [ISO-abbreviation] J Clin Neurosci
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Scotland
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11. Shibahara I, Kanamori M, Kumabe T, Endo H, Sonoda Y, Ogawa Y, Watanabe M, Tominaga T: Hemorrhagic onset of pilocytic astrocytoma and pilomyxoid astrocytoma. Brain Tumor Pathol; 2009;26(1):1-5
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  • [Title] Hemorrhagic onset of pilocytic astrocytoma and pilomyxoid astrocytoma.
  • The incidence of hemorrhagic onset in pilocytic astrocytoma and pilomyxoid astrocytoma, and the clinical and histological characteristics, were compared to other types of neuroepithelial tumors or nonhemorrhagic pilocytic astrocytoma by retrospective review of 445 consecutive neuroepithelial tumors treated at our institute.
  • Hemorrhagic onset was observed in 4 of 35 (11.4%) patients with pilocytic astrocytoma and pilomyxoid astrocytoma, with higher incidence than in glioblastoma (3.9%), anaplastic oligodendroglioma (7.7%), and anaplastic ependymoma (7.1%).
  • The hemorrhagic onset occurred in 2 patients with sporadic pilocytic astrocytoma, 1 with pilocytic astrocytoma associated with neurofibromatosis type 1, and 1 with pilomyxoid astrocytoma.
  • Hemorrhagic onset of pilocytic astrocytoma and pilomyxoid astrocytoma is not as uncommon as was previously thought, so pilocytic astrocytoma or pilomyxoid astrocytoma should be considered in the differential diagnosis of patients with brain tumors manifesting as hemorrhagic onset.
  • [MeSH-major] Astrocytoma / complications. Astrocytoma / pathology. Brain Neoplasms / complications. Brain Neoplasms / pathology. Intracranial Hemorrhages / etiology. Intracranial Hemorrhages / pathology
  • [MeSH-minor] Adolescent. Adult. Aged. Brain / pathology. Capillaries / pathology. Child. Child, Preschool. Female. Humans. Immunohistochemistry. Ki-67 Antigen / metabolism. Magnetic Resonance Imaging. Male. Middle Aged. Neurofibromatosis 1 / complications. Neurofibromatosis 1 / pathology. Paralysis / etiology. Tomography, X-Ray Computed. Young Adult

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  • (PMID = 19408090.001).
  • [ISSN] 1861-387X
  • [Journal-full-title] Brain tumor pathology
  • [ISO-abbreviation] Brain Tumor Pathol
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Japan
  • [Chemical-registry-number] 0 / Ki-67 Antigen
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12. Korshunov A, Meyer J, Capper D, Christians A, Remke M, Witt H, Pfister S, von Deimling A, Hartmann C: Combined molecular analysis of BRAF and IDH1 distinguishes pilocytic astrocytoma from diffuse astrocytoma. Acta Neuropathol; 2009 Sep;118(3):401-5
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  • [Title] Combined molecular analysis of BRAF and IDH1 distinguishes pilocytic astrocytoma from diffuse astrocytoma.
  • Separation of pilocytic astrocytoma from diffuse astrocytomas frequently poses problems mostly related to small sample size.
  • Precise classification and grading are essential due to different therapeutic strategies prompted by diagnoses of pilocytic astrocytoma WHO grade I, diffuse astrocytomas WHO grade II or anaplastic astrocytoma WHO grade III.
  • Pilocytic astrocytomas carry a duplication at chromosome band 7q34 containing a BRAF-KIAA1549 gene fusion in the majority of cases.
  • IDH1 mutations are observed very frequently in adult astrocytomas and IDH2 mutations have been reported in some astrocytomas.
  • We examined a series of 120 astrocytomas including 70 pilocytic astrocytomas WHO grade I and 50 diffuse astrocytomas WHO grade II for both, BRAF-KIAA1549 fusion with a newly developed FISH assay and mutations in IDH1 and IDH2 by direct sequencing.
  • Pilocytic astrocytomas contained the BRAF fusion in 49 cases (70%) but neither IDH1 nor IDH2 mutations.
  • Thus, combined molecular analysis of BRAF and IDH1 is a sensitive and highly specific approach to separate pilocytic astrocytoma from diffuse astrocytoma.
  • [MeSH-major] Astrocytoma / diagnosis. Brain Neoplasms / diagnosis. Isocitrate Dehydrogenase / genetics. Proto-Oncogene Proteins B-raf / genetics
  • [MeSH-minor] Adolescent. Adult. Aged. Biomarkers, Tumor. Child. Child, Preschool. Diagnosis, Differential. Female. Humans. In Situ Hybridization, Fluorescence. Male. Middle Aged. Mutation. Tissue Array Analysis


13. Rodríguez-Francia P, Sánchez-Tocino H, García-Cantera M, Martín-Castillo J: [Optic nerve pilocytic astrocytoma with retinal involvement]. Arch Soc Esp Oftalmol; 2005 Dec;80(12):733-6
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  • [Title] [Optic nerve pilocytic astrocytoma with retinal involvement].
  • INTRODUCTION: This is an atypical case of a pilocytic astrocytoma that involved the optic nerve (ON) and the retina.
  • The histopathological study after enucleation was pilocytic astrocytoma.
  • [MeSH-minor] Adult. Eye Enucleation. Humans. Magnetic Resonance Imaging. Male. Treatment Outcome. Visual Acuity

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  • (PMID = 16372218.001).
  • [ISSN] 0365-6691
  • [Journal-full-title] Archivos de la Sociedad Española de Oftalmología
  • [ISO-abbreviation] Arch Soc Esp Oftalmol
  • [Language] spa
  • [Publication-type] Case Reports; English Abstract; Journal Article
  • [Publication-country] Spain
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4. Neves AM, Thompson G, Carvalheira J, Trindade JC, Rueff J, Caetano JM, Casey JW, Hermouet S: Detection and quantitative analysis of human herpesvirus in pilocytic astrocytoma. Brain Res; 2008 Jul 24;1221:108-14
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  • [Title] Detection and quantitative analysis of human herpesvirus in pilocytic astrocytoma.
  • Thirty-five samples of pilocytic astrocytoma and 10 control samples of cerebellum from patients who died of unrelated diseases were examined.
  • In summary, EBV was the most frequent HHV detected in pilocytic astrocytoma, but at very low levels.
  • According to the actually accepted threshold the results suggest that EBV cannot be considered responsible for tumorigenesis of pilocytic astrocytoma.
  • [MeSH-major] Astrocytoma / virology. Cerebellar Neoplasms / virology. DNA, Viral / genetics. Herpesviridae / genetics. Herpesviridae Infections / complications. Herpesviridae Infections / genetics
  • [MeSH-minor] Adolescent. Adult. Aged. Aged, 80 and over. Astrocytes / pathology. Astrocytes / virology. Causality. Cell Transformation, Neoplastic / genetics. Child. Child, Preschool. DNA Polymerase III / genetics. Female. Herpesvirus 4, Human / genetics. Humans. Infant. Male. Middle Aged. Reverse Transcriptase Polymerase Chain Reaction / methods

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  • (PMID = 18565499.001).
  • [ISSN] 0006-8993
  • [Journal-full-title] Brain research
  • [ISO-abbreviation] Brain Res.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Netherlands
  • [Chemical-registry-number] 0 / DNA, Viral; EC 2.7.7.- / DNA Polymerase III; EC 2.7.7.- / DNA polymerase A
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15. Lyons MK: Pilocytic astrocytoma with spontaneous intracranial hemorrhages in an elderly adult. Clin Neurol Neurosurg; 2007 Jan;109(1):76-80
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  • [Title] Pilocytic astrocytoma with spontaneous intracranial hemorrhages in an elderly adult.
  • Pilocytic astrocytomas are relatively uncommon tumors found predominantly in the pediatric population.
  • This is a report of a 75-year-old man presenting with two spontaneous intracranial hemorrhages and subsequent resection of a pilocytic astrocytoma.
  • A review of the literature summarizes the current field of knowledge of adult pilocytic astrocytomas in the setting of intracranial hemorrhage.
  • [MeSH-major] Astrocytoma / complications. Brain Neoplasms / complications. Intracranial Hemorrhages / etiology

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  • (PMID = 16621238.001).
  • [ISSN] 0303-8467
  • [Journal-full-title] Clinical neurology and neurosurgery
  • [ISO-abbreviation] Clin Neurol Neurosurg
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Netherlands
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16. Bar EE, Lin A, Tihan T, Burger PC, Eberhart CG: Frequent gains at chromosome 7q34 involving BRAF in pilocytic astrocytoma. J Neuropathol Exp Neurol; 2008 Sep;67(9):878-87
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  • [Title] Frequent gains at chromosome 7q34 involving BRAF in pilocytic astrocytoma.
  • Relatively little is known about the molecular changes that promote the formation or growth of pilocytic astrocytomas.
  • We investigated genomic alterations in 25 pilocytic astrocytomas, including 5 supratentorial and 20 posterior fossa tumors, using oligonucleotide array comparative genomic hybridization.
  • Western blot analysis revealed that 3 of 6 pilocytic astrocytomas with 7q34 gain contained high levels of phosphorylated extracellular signal-related kinase (ERK) and nitrogen-activated protein kinase/ERK kinase (MEK), while 1 tumor lacking 7q34 gain and 2 normal brain specimens did not.
  • Immunohistochemical stains of a tissue microarray containing 43 pilocytic astrocytoma identified ERK phosphorylation in 35 (81%).
  • These data indicate that focal gains at chromosome 7q34 and increased BRAF-MEK-ERK signaling are common findings in sporadic pilocytic astrocytomas.
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / genetics. Chromosomes, Human, Pair 7 / genetics. Proto-Oncogene Proteins B-raf / genetics. Signal Transduction / physiology
  • [MeSH-minor] Adolescent. Adult. Blotting, Western. Child. Child, Preschool. Extracellular Signal-Regulated MAP Kinases / metabolism. Female. Gene Dosage. Humans. Immunohistochemistry. MAP Kinase Kinase Kinases / metabolism. Male. Oligonucleotide Array Sequence Analysis. Reverse Transcriptase Polymerase Chain Reaction. Tissue Array Analysis

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  • (PMID = 18716556.001).
  • [ISSN] 0022-3069
  • [Journal-full-title] Journal of neuropathology and experimental neurology
  • [ISO-abbreviation] J. Neuropathol. Exp. Neurol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] EC 2.7.11.1 / BRAF protein, human; EC 2.7.11.1 / Proto-Oncogene Proteins B-raf; EC 2.7.11.24 / Extracellular Signal-Regulated MAP Kinases; EC 2.7.11.25 / MAP Kinase Kinase Kinases
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17. Rodriguez FJ, Scheithauer BW, Burger PC, Jenkins S, Giannini C: Anaplasia in pilocytic astrocytoma predicts aggressive behavior. Am J Surg Pathol; 2010 Feb;34(2):147-60
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  • [Title] Anaplasia in pilocytic astrocytoma predicts aggressive behavior.
  • The clinical significance of anaplastic features, a rare event in pilocytic astrocytoma (PA), is not fully established.
  • The tumors either had a PA precursor, coexistent (n = 14) (41%) or documented by previous biopsy (n = 10) (29%), or exhibited typical pilocytic features in an otherwise anaplastic astrocytoma (n = 10) (29%).
  • Histologically, the anaplastic component was classified as pilocytic like (41%), small cell (32%), epithelioid (15%), or fibrillary (12%).
  • [MeSH-major] Astrocytoma / diagnosis. Brain Neoplasms / diagnosis
  • [MeSH-minor] Adolescent. Adult. Aged. Anaplasia. Biomarkers, Tumor / metabolism. Child. Child, Preschool. Combined Modality Therapy. Female. Humans. Kaplan-Meier Estimate. Male. Middle Aged. Minnesota / epidemiology. Mitosis. Prognosis. Retrospective Studies. Survival Rate. Ubiquitin-Protein Ligases / metabolism. Young Adult

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  • (PMID = 20061938.001).
  • [ISSN] 1532-0979
  • [Journal-full-title] The American journal of surgical pathology
  • [ISO-abbreviation] Am. J. Surg. Pathol.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; EC 6.3.2.19 / MIB1 ligase, human; EC 6.3.2.19 / Ubiquitin-Protein Ligases
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18. Tanaka Y, Sasaki A, Ishiuchi S, Nakazato Y: Diversity of glial cell components in pilocytic astrocytoma. Neuropathology; 2008 Aug;28(4):399-407
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  • [Title] Diversity of glial cell components in pilocytic astrocytoma.
  • To characterize the cellular density and proliferative activity of GFAP-negative cells in pilocytic astrocytoma (PA), surgically excised tissues of PAs (n=37) and diffuse astrocytomas (DAs) (n=11) were examined morphologically and immunohistochemically using antibodies against GFAP, Olig2, Iba1 and Ki-67 (MIB-1).
  • [MeSH-major] Astrocytoma / metabolism. Basic Helix-Loop-Helix Transcription Factors / biosynthesis. Biomarkers, Tumor / analysis. Brain Neoplasms / metabolism. Nerve Tissue Proteins / biosynthesis. Neuroglia / metabolism
  • [MeSH-minor] Adult. Aged. Child. Child, Preschool. DNA-Binding Proteins / biosynthesis. Diagnosis, Differential. Female. Glial Fibrillary Acidic Protein / biosynthesis. Humans. Immunohistochemistry. In Situ Hybridization, Fluorescence. Infant. Infant, Newborn. Ki-67 Antigen / biosynthesis. Male. Middle Aged

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  • (PMID = 18312545.001).
  • [ISSN] 0919-6544
  • [Journal-full-title] Neuropathology : official journal of the Japanese Society of Neuropathology
  • [ISO-abbreviation] Neuropathology
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Australia
  • [Chemical-registry-number] 0 / AIF1 protein, human; 0 / Basic Helix-Loop-Helix Transcription Factors; 0 / Biomarkers, Tumor; 0 / DNA-Binding Proteins; 0 / Glial Fibrillary Acidic Protein; 0 / Ki-67 Antigen; 0 / Nerve Tissue Proteins; 0 / OLIG2 protein, human
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19. Lueth M, Wronski L, Giese A, Kirschner-Schwabe R, Pietsch T, von Deimling A, Henze G, Kurtz A, Driever PH: Somatic mitochondrial mutations in pilocytic astrocytoma. Cancer Genet Cytogenet; 2009 Jul;192(1):30-5
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  • [Title] Somatic mitochondrial mutations in pilocytic astrocytoma.
  • The most common brain tumors in childhood and adolescence are low grade pilocytic astrocytomas (PA).
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / genetics. Genome, Mitochondrial. Mutation
  • [MeSH-minor] Adolescent. Adult. Base Sequence. Child. Child, Preschool. DNA Mutational Analysis. Female. Germ-Line Mutation. Humans. Infant. Male. Molecular Sequence Data


20. Tibbetts KM, Emnett RJ, Gao F, Perry A, Gutmann DH, Leonard JR: Histopathologic predictors of pilocytic astrocytoma event-free survival. Acta Neuropathol; 2009 Jun;117(6):657-65
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  • [Title] Histopathologic predictors of pilocytic astrocytoma event-free survival.
  • Pilocytic astrocytoma (PA) is the most common pediatric brain tumor.
  • [MeSH-major] Astrocytoma / pathology. Brain Neoplasms / pathology
  • [MeSH-minor] Adolescent. Adult. Antigens, CD / metabolism. Antigens, Differentiation, Myelomonocytic / metabolism. Brain / pathology. Brain / physiopathology. Child. Child, Preschool. Disease-Free Survival. Female. Humans. Immunohistochemistry. Infant. Male. Mitotic Index. Retrospective Studies. Signal Transduction. Tumor Suppressor Protein p53 / metabolism. Young Adult


21. Kitagawa M, Sato T, Ishizaki R, Saiki M: [Resolution of migraine with aura by removing pilocytic astrocytoma of the occipital lobe]. No Shinkei Geka; 2006 Jan;34(1):59-64
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  • [Title] [Resolution of migraine with aura by removing pilocytic astrocytoma of the occipital lobe].
  • Here we report a case of pilocytic astrocytoma in the right occipital lobe presenting as migraine with aura.
  • Total removal of the tumor (pilocytic astrocytoma, WHO grade 1) relieved her migraine completely.
  • But this is the first report of occipital pilocytic astrocytoma presenting as migraine with aura.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Migraine with Aura / etiology. Occipital Lobe
  • [MeSH-minor] Adult. Female. Humans. Intracranial Hypertension / etiology

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  • (PMID = 16440698.001).
  • [ISSN] 0301-2603
  • [Journal-full-title] No shinkei geka. Neurological surgery
  • [ISO-abbreviation] No Shinkei Geka
  • [Language] jpn
  • [Publication-type] Case Reports; English Abstract; Journal Article
  • [Publication-country] Japan
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22. Sie M, de Bont ES, Scherpen FJ, Hoving EW, den Dunnen WF: Tumour vasculature and angiogenic profile of paediatric pilocytic astrocytoma; is it much different from glioblastoma? Neuropathol Appl Neurobiol; 2010 Dec;36(7):636-47
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  • [Title] Tumour vasculature and angiogenic profile of paediatric pilocytic astrocytoma; is it much different from glioblastoma?
  • AIMS: Pilocytic astrocytomas are the most frequent brain tumours in children.
  • In this study 59 paediatric pilocytic astrocytomas were compared with 62 adult glioblastomas, as a prototype of tumour angiogenesis.
  • RESULTS: Pilocytic astrocytoma and glioblastoma showed similar fractions of vessels covered with basement membrane and pericytes.
  • Pilocytic astrocytoma had fewer but wider vessels compared with glioblastoma.
  • Turnover of endothelial and tumour cells were relatively lower in pilocytic astrocytoma.
  • Within pilocytic astrocytoma, higher ANGPT-1/ANGPT-2 balance was correlated with fewer apoptotic endothelial cells.
  • CONCLUSIONS: Despite the fact that pilocytic astrocytoma showed a different vessel architecture compared with glioblastoma, a critical overlap in vessel immaturity/instability and the angiogenic profile was seen between both tumours.
  • These findings suggest encouraging possibilities for targeting angiogenesis (for instance with anti-VEGF) as a therapeutic strategy in pilocytic astrocytoma.

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  • [Copyright] © 2010 The Authors. Neuropathology and Applied Neurobiology © 2010 British Neuropathological Society.
  • (PMID = 20704656.001).
  • [ISSN] 1365-2990
  • [Journal-full-title] Neuropathology and applied neurobiology
  • [ISO-abbreviation] Neuropathol. Appl. Neurobiol.
  • [Language] eng
  • [Publication-type] Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Angiogenic Proteins; 0 / Angiopoietin-1; 0 / Angiopoietin-2; 0 / Vascular Endothelial Growth Factor A
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23. Berhouma M, Jemel H, Kchir N: Calcified pilocytic astrocytoma of the medulla mimicking a brainstem "stone". Pathologica; 2008 Oct;100(5):408-10
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  • [Title] Calcified pilocytic astrocytoma of the medulla mimicking a brainstem "stone".
  • Pilocytic astrocytomas usually involve the midbrain and the medulla, and their surgical resection, when feasible, is generally curative.
  • Thin calcifications can be normally found within low grade gliomas, but densely calcified pilocytic astrocytomas of the brainstem have been only rarely reported.
  • The definitive pathological diagnosis was calcified pilocytic astrocytoma.
  • [MeSH-major] Astrocytoma / diagnosis. Brain Stem Neoplasms / diagnosis. Calcinosis / diagnosis. Medulla Oblongata / pathology
  • [MeSH-minor] Adult. Diagnosis, Differential. Gait Ataxia / etiology. Humans. Male

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  • (PMID = 19253601.001).
  • [ISSN] 0031-2983
  • [Journal-full-title] Pathologica
  • [ISO-abbreviation] Pathologica
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Italy
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24. Oka F, Yamashita Y, Kumabe T, Tominaga T: Total resection of a hemorrhagic tectal pilocytic astrocytoma--case report. Neurol Med Chir (Tokyo); 2007 May;47(5):219-21
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  • [Title] Total resection of a hemorrhagic tectal pilocytic astrocytoma--case report.
  • A 21-year-old man presented with a hemorrhagic pilocytic astrocytoma of the tectal plate manifesting as sudden onset of severe headache, vertigo, nausea, and vomiting.
  • The histological diagnosis was pilocytic astrocytoma.
  • Tectal plate pilocytic astrocytoma is rarely associated with hemorrhage but should be considered in the differential diagnosis of intracranial hemorrhage with acute presentation.
  • [MeSH-major] Astrocytoma / pathology. Astrocytoma / surgery. Brain Neoplasms / pathology. Brain Neoplasms / surgery. Intracranial Hemorrhages / etiology. Tectum Mesencephali
  • [MeSH-minor] Adult. Humans. Male

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  • (PMID = 17527049.001).
  • [ISSN] 0470-8105
  • [Journal-full-title] Neurologia medico-chirurgica
  • [ISO-abbreviation] Neurol. Med. Chir. (Tokyo)
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Japan
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25. Otero-Rodríguez A, Sarabia-Herrero R, García-Tejeiro M, Zamora-Martínez T: Spontaneous malignant transformation of a supratentorial pilocytic astrocytoma. Neurocirugia (Astur); 2010 Jun;21(3):245-52
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  • [Title] Spontaneous malignant transformation of a supratentorial pilocytic astrocytoma.
  • Pilocytic astrocytoma (PA) is a circumscribed neoplasia considered as a grade I astrocytoma by the World Health Organization.
  • [MeSH-major] Astrocytoma / pathology. Cell Transformation, Neoplastic / pathology. Supratentorial Neoplasms / pathology
  • [MeSH-minor] Adult. Humans. Male. Treatment Outcome

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  • (PMID = 20571729.001).
  • [ISSN] 1130-1473
  • [Journal-full-title] Neurocirugía (Asturias, Spain)
  • [ISO-abbreviation] Neurocirugia (Astur)
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Spain
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26. Jager B, Schuhmann MU, Schober R, Kortmann RD, Meixensberger J: Induction of gliosarcoma and atypical meningioma 13 years after radiotherapy of residual pilocytic astrocytoma in childhood. Pediatr Neurosurg; 2008;44(2):153-8
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  • [Title] Induction of gliosarcoma and atypical meningioma 13 years after radiotherapy of residual pilocytic astrocytoma in childhood.
  • BACKGROUND: Malignant transformation of pilocytic astrocytomas in children is rare and often linked to previous radiotherapy.
  • METHODS AND RESULTS: We report a patient who underwent subtotal resection of a right temporal and insular pilocytic astrocytoma at age 8 in 1988 followed by high-dose radiation therapy.
  • CONCLUSION: Most of the reported cases of malignant transformation of pilocytic astrocytomas received radiation therapy beforehand.
  • The presented case illustrates why adjuvant radiotherapy of residual pilocytic astrocytoma in children is not recommended anymore.
  • [MeSH-major] Astrocytoma / radiotherapy. Gliosarcoma / etiology. Meningeal Neoplasms / etiology. Meningioma / etiology. Neoplasms, Radiation-Induced / etiology
  • [MeSH-minor] Adult. Humans. Male. Radiotherapy / adverse effects


27. Potter N, Karakoula A, Phipps KP, Harkness W, Hayward R, Thompson DN, Jacques TS, Harding B, Thomas DG, Palmer RW, Rees J, Darling J, Warr TJ: Genomic deletions correlate with underexpression of novel candidate genes at six loci in pediatric pilocytic astrocytoma. Neoplasia; 2008 Aug;10(8):757-72
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  • [Title] Genomic deletions correlate with underexpression of novel candidate genes at six loci in pediatric pilocytic astrocytoma.
  • The molecular pathogenesis of pediatric pilocytic astrocytoma (PA) is not well defined.
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / genetics. Gene Dosage / genetics. Gene Expression Regulation, Neoplastic / genetics. Proteins / genetics. Quantitative Trait Loci / genetics. Sequence Deletion / genetics
  • [MeSH-minor] Adaptor Proteins, Signal Transducing / genetics. Adult. Cell Adhesion Molecules, Neuronal / genetics. Child. Child, Preschool. Chromosome Aberrations. Chromosomes, Human, Pair 10 / genetics. Chromosomes, Human, Pair 12 / genetics. Chromosomes, Human, Pair 17 / genetics. Chromosomes, Human, Pair 7 / genetics. Chromosomes, Human, Pair 9 / genetics. Cluster Analysis. Female. Forkhead Transcription Factors / genetics. Gene Expression Profiling. Humans. Infant. Male. Microfilament Proteins / genetics. Nerve Tissue Proteins / genetics. Oligonucleotide Array Sequence Analysis. Oncogene Proteins / genetics. Receptors, Dopamine D1 / genetics. Reverse Transcriptase Polymerase Chain Reaction. Sequence Analysis, DNA

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  • (PMID = 18670637.001).
  • [ISSN] 1476-5586
  • [Journal-full-title] Neoplasia (New York, N.Y.)
  • [ISO-abbreviation] Neoplasia
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Canada
  • [Chemical-registry-number] 0 / Adaptor Proteins, Signal Transducing; 0 / BCL7A protein, human; 0 / BCL7B protein, human; 0 / CNTNAP1 protein, human; 0 / Cell Adhesion Molecules, Neuronal; 0 / FOXG1 protein, human; 0 / Forkhead Transcription Factors; 0 / Microfilament Proteins; 0 / Nerve Tissue Proteins; 0 / Oncogene Proteins; 0 / Proteins; 0 / Receptors, Dopamine D1; 0 / SH3GL2 protein, human
  • [Other-IDs] NLM/ PMC2481566
  •  go-up   go-down


28. Colnat-Coulbois S, Klein O, Braun M, Thouvenot P, Marchal JC: Management of intramedullary cystic pilocytic astrocytoma with rhenium-186 intracavitary irradiation: case report. Neurosurgery; 2010 May;66(5):E1023-4; discussion E1024
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  • [Title] Management of intramedullary cystic pilocytic astrocytoma with rhenium-186 intracavitary irradiation: case report.
  • OBJECTIVE: We report a case of cystic spinal cord pilocytic astrocytoma treated with surgical resection and 2 intracavitary injections of rhenium.
  • Pathological examination allowed the diagnosis of pilocytic astrocytoma.
  • [MeSH-major] Astrocytoma / radiotherapy. Brachytherapy / methods. Radioisotopes / therapeutic use. Rhenium / therapeutic use. Spinal Cord Neoplasms / radiotherapy
  • [MeSH-minor] Cauda Equina / pathology. Combined Modality Therapy. Cysts / pathology. Humans. Male. Neoplasm Recurrence, Local / physiopathology. Neoplasm Recurrence, Local / radiotherapy. Neoplasm Recurrence, Local / surgery. Neurosurgical Procedures. Young Adult

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  • (PMID = 20404673.001).
  • [ISSN] 1524-4040
  • [Journal-full-title] Neurosurgery
  • [ISO-abbreviation] Neurosurgery
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Radioisotopes; 7440-15-5 / Rhenium
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29. Fenton E, Refai D, See W, Rawluk DJ: Supratentorial juvenile pilocytic astrocytoma in a young adult with Silver-Russell syndrome. Br J Neurosurg; 2008 Dec;22(6):776-7
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  • [Title] Supratentorial juvenile pilocytic astrocytoma in a young adult with Silver-Russell syndrome.
  • We report the first case of Silver-Russell syndrome associated with a supratentorial juvenile pilocytic astrocytoma.
  • [MeSH-major] Astrocytoma / complications. Chromosome Disorders / complications. Fetal Growth Retardation. Headache Disorders / etiology
  • [MeSH-minor] Adult. Female. Humans. Magnetic Resonance Imaging, Interventional / methods. Syndrome. Treatment Outcome


30. Kumar AJ, Leeds NE, Kumar VA, Fuller GN, Lang FF, Milas Z, Weinberg JS, Ater JL, Sawaya R: Magnetic resonance imaging features of pilocytic astrocytoma of the brain mimicking high-grade gliomas. J Comput Assist Tomogr; 2010 Jul;34(4):601-11
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  • [Title] Magnetic resonance imaging features of pilocytic astrocytoma of the brain mimicking high-grade gliomas.
  • OBJECTIVE: The typical magnetic resonance/computed tomographic imaging appearance of pilocytic astrocytoma (PA) is that of a cyst with an intensely enhancing mural nodule.
  • CONCLUSIONS: It is important to recognize the aggressive imaging appearance of PA (grade 1 astrocytoma) because it can be mistaken for high-grade gliomas and may thus lead to inappropriate therapy.
  • [MeSH-major] Astrocytoma / diagnosis. Brain Neoplasms / diagnosis. Glioma / diagnosis. Magnetic Resonance Imaging / methods
  • [MeSH-minor] Adult. Brain / pathology. Brain / radiography. Diagnosis, Differential. Female. Humans. Male. Middle Aged. Retrospective Studies. Tomography, X-Ray Computed / methods. Young Adult

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  • (PMID = 20657231.001).
  • [ISSN] 1532-3145
  • [Journal-full-title] Journal of computer assisted tomography
  • [ISO-abbreviation] J Comput Assist Tomogr
  • [Language] eng
  • [Grant] United States / NCI NIH HHS / CA / P30 CA016672
  • [Publication-type] Journal Article
  • [Publication-country] United States
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31. Hafez RF: Stereotaxic gamma knife surgery in treatment of critically located pilocytic astrocytoma: preliminary result. World J Surg Oncol; 2007;5:39
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  • [Title] Stereotaxic gamma knife surgery in treatment of critically located pilocytic astrocytoma: preliminary result.
  • CASE PRESENTATIONS: Two patients with diagnosed recurrent cystic pilocytic astrocytoma critically located within the brain (thalamic and brain stem) were treated with gamma knife surgery.
  • CONCLUSION: Gamma knife surgery represents an alternate tool in the treatment of recurrent and/or small postoperative residual pilocytic astrocytoma especially if they are critically located.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Radiosurgery
  • [MeSH-minor] Adult. Brain Stem Neoplasms / pathology. Brain Stem Neoplasms / surgery. Child. Female. Humans. Magnetic Resonance Imaging. Thalamic Diseases / pathology. Thalamic Diseases / surgery. Young Adult

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  • (PMID = 17394660.001).
  • [ISSN] 1477-7819
  • [Journal-full-title] World journal of surgical oncology
  • [ISO-abbreviation] World J Surg Oncol
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] England
  • [Other-IDs] NLM/ PMC1852107
  • [General-notes] NLM/ Original DateCompleted: 20070726
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32. Taraszewska A, Czernicki Z, Andrychowski J: Hemosiderin pigmentation of tumour cells in cerebellar pilocytic astrocytoma associated with post-traumatic hemorrhage in adults. Folia Neuropathol; 2005;43(3):172-7
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  • [Title] Hemosiderin pigmentation of tumour cells in cerebellar pilocytic astrocytoma associated with post-traumatic hemorrhage in adults.
  • The pilocytic astrocytoma is only rarely associated with gross intratumoral hemorrhage despite rich vasculature and blood vessel changes, accompanied often by perivascular depots of hemosiderin.
  • We report an unusual case of pigmented cerebellar pilocytic astrocytoma presenting with posttraumatic hemorrhage in a 38-year-old man with no history related to the tumor.
  • Histopathological examination revealed pilocytic astrocytoma tissue with broad hemorrhagic changes and with an unusual pattern of massive pigmentation of the cytoplasm of pilocytic astrocytes, consistent with hemosiderosis.
  • To our knowledge, this is the first reported case of pigmented pilocytic astrocytoma exhibiting extensive intracellular hemosiderin deposition.

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  • (PMID = 16245213.001).
  • [ISSN] 1641-4640
  • [Journal-full-title] Folia neuropathologica
  • [ISO-abbreviation] Folia Neuropathol
  • [Language] ENG
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Poland
  • [Chemical-registry-number] 9011-92-1 / Hemosiderin
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33. Sekula RF Jr, Marchan EM, Quigley MR, Frederickson AM, Pu C: A case of an elderly adult presenting with obstructive hydrocephalus secondary to a rare hemorrhagic suprasellar pilocytic astrocytoma. Clin Neuropathol; 2008 Nov-Dec;27(6):396-9
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  • [Title] A case of an elderly adult presenting with obstructive hydrocephalus secondary to a rare hemorrhagic suprasellar pilocytic astrocytoma.
  • Urgent surgery was performed and final pathology eventuated a pilocytic astrocytoma.
  • Although rare cases of suprasellar pilocytic astrocytoma in children and adults have been reported, we report an interesting case of a hemorrhagic suprasellar pilocytic astrocytoma in an elderly adult (without prior anticoagulant use) causing impending brain herniation secondary to obstructive hydrocephalus.
  • [MeSH-major] Astrocytoma / pathology. Brain Neoplasms / pathology. Cerebral Hemorrhage / etiology. Hydrocephalus / etiology


34. Moshel YA, Link MJ, Kelly PJ: Stereotactic volumetric resection of thalamic pilocytic astrocytomas. Neurosurgery; 2007 Jul;61(1):66-75; discussion 75
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  • [Title] Stereotactic volumetric resection of thalamic pilocytic astrocytomas.
  • OBJECTIVE: To describe the surgical approaches, the radiographic and clinical outcomes, and the long-term follow-up of patients harboring thalamic pilocytic astrocytomas after radical resection by means of a stereotactic volumetric technique.
  • METHODS: Seventy-two patients with thalamic pilocytic astrocytomas underwent stereotactic volumetric resection by the senior author (PJK) at the Mayo Clinic between 1984 and 1993 (44 patients) and at New York University Medical Center between 1993 and 2005 (28 patients).
  • CONCLUSION: Gross total removal of thalamic pilocytic astrocytomas with low morbidity and mortality can be achieved by computer-assisted stereotactic volumetric resection techniques.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Paresis / prevention & control. Stereotaxic Techniques. Thalamic Diseases / surgery. Thalamus / surgery
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Humans. Male. Middle Aged. Treatment Outcome

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  • (PMID = 17621020.001).
  • [ISSN] 1524-4040
  • [Journal-full-title] Neurosurgery
  • [ISO-abbreviation] Neurosurgery
  • [Language] eng
  • [Publication-type] Clinical Trial; Journal Article
  • [Publication-country] United States
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35. Bing F, Kremer S, Lamalle L, Chabardes S, Ashraf A, Pasquier B, Le Bas JF, Krainik A, Grand S: [Value of perfusion MRI in the study of pilocytic astrocytoma and hemangioblastoma: preliminary findings]. J Neuroradiol; 2009 May;36(2):82-7
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  • [Title] [Value of perfusion MRI in the study of pilocytic astrocytoma and hemangioblastoma: preliminary findings].
  • PURPOSE: Pilocytic astrocytomas (PA) and hemangioblastomas (HB) can present the same morphological characteristics on conventional MRI sequences, most usually in the form of a cerebellar cystic mass with a mural nodule that strongly enhances on post-contrast T1 images.
  • [MeSH-major] Astrocytoma / diagnosis. Blood Volume. Brain / blood supply. Brain Neoplasms / diagnosis. Cerebrovascular Circulation. Hemangioblastoma / diagnosis. Magnetic Resonance Imaging / methods
  • [MeSH-minor] Adolescent. Adult. Aged. Child. Diagnosis, Differential. Female. Humans. Male. Middle Aged. Young Adult


36. Rush SZ, Abel TW, Valadez JG, Pearson M, Cooper MK: Activation of the Hedgehog pathway in pilocytic astrocytomas. Neuro Oncol; 2010 Aug;12(8):790-8
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  • [Title] Activation of the Hedgehog pathway in pilocytic astrocytomas.
  • Pilocytic astrocytoma is commonly viewed as a benign lesion.
  • The Hedgehog (Hh) pathway regulates the growth of higher WHO grade gliomas, and in this study, we have evaluated the activation and operational status of this regulatory pathway in pilocytic astrocytomas.
  • Taken together, these findings suggest that Hh pathway activation is common in pediatric pilocytic astrocytomas and may be associated with younger age at diagnosis and tumor growth.

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  • (PMID = 20223881.001).
  • [ISSN] 1523-5866
  • [Journal-full-title] Neuro-oncology
  • [ISO-abbreviation] Neuro-oncology
  • [Language] ENG
  • [Grant] United States / NCI NIH HHS / CA / P30 CA068485; United States / NINDS NIH HHS / NS / K02NS053614
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural
  • [Publication-country] England
  • [Chemical-registry-number] 0 / GLI1 protein, human; 0 / Hedgehog Proteins; 0 / RNA, Messenger; 0 / Receptors, Cell Surface; 0 / Transcription Factors; 0 / patched receptors
  • [Other-IDs] NLM/ PMC2940682
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37. Arai K, Sato N, Aoki J, Yagi A, Taketomi-Takahashi A, Morita H, Koyama Y, Oba H, Ishiuchi S, Saito N, Endo K: MR signal of the solid portion of pilocytic astrocytoma on T2-weighted images: is it useful for differentiation from medulloblastoma? Neuroradiology; 2006 Apr;48(4):233-7
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  • [Title] MR signal of the solid portion of pilocytic astrocytoma on T2-weighted images: is it useful for differentiation from medulloblastoma?
  • BACKGROUND AND PURPOSE: Although imaging features of cerebellar pilocytic astrocytoma and medulloblastoma have been described in many texts, original comparisons of magnetic resonance intensity between these two tumours are limited.
  • METHODS: MR images of ten cerebellar pilocytic astrocytomas and ten medulloblastomas were reviewed.
  • RESULTS: On T2-weighted images, the signal intensity of the solid portion was equal to that of cerebrospinal fluid (CSF) in 50% of pilocytic astrocytomas.
  • On T1-weighted images, the signal intensity varied widely in pilocytic astrocytomas; however, all medulloblastomas were iso- or hypointense to grey matter.
  • CONCLUSION: A signal intensity of the solid portion isointense to CSF on T2-weighted images was characteristic of cerebellar pilocytic astrocytomas; this was not observed in medulloblastomas.
  • Attention to T2-weighted imaging of the solid portions of a tumour is easy and helpful in differentiating between cerebellar pilocytic astrocytoma and medulloblastoma.
  • [MeSH-major] Astrocytoma / diagnosis. Cerebellar Neoplasms / diagnosis. Magnetic Resonance Imaging / methods. Medulloblastoma / diagnosis
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Diagnosis, Differential. Female. Humans. Infant. Male

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  • (PMID = 16550430.001).
  • [ISSN] 0028-3940
  • [Journal-full-title] Neuroradiology
  • [ISO-abbreviation] Neuroradiology
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Germany
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38. Ebinger M, Senf L, Wachowski O, Scheurlen W: No aberrant methylation of neurofibromatosis 1 gene (NF1) promoter in pilocytic astrocytoma in childhood. Pediatr Hematol Oncol; 2005 Jan-Feb;22(1):83-7
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  • [Title] No aberrant methylation of neurofibromatosis 1 gene (NF1) promoter in pilocytic astrocytoma in childhood.
  • Neurofibromatosis type 1 (NF1) is strongly associated with the development of pilocytic astrocytoma (PA), frequently appearing as optic glioma.
  • The authors conclude that NF1 silencing by methylation plays no role in low-grade astrocytoma.
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Humans. Infant. Male

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  • (PMID = 15770836.001).
  • [ISSN] 0888-0018
  • [Journal-full-title] Pediatric hematology and oncology
  • [ISO-abbreviation] Pediatr Hematol Oncol
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Neurofibromin 1
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39. White JB, Piepgras DG, Scheithauer BW, Parisi JE: Rate of spontaneous hemorrhage in histologically proven cases of pilocytic astrocytoma. J Neurosurg; 2008 Feb;108(2):223-6
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Rate of spontaneous hemorrhage in histologically proven cases of pilocytic astrocytoma.
  • Hemorrhage associated with pilocytic astrocytomas (PAs) is only sporadically reported.
  • [MeSH-major] Astrocytoma / complications. Brain Neoplasms / complications. Cerebral Hemorrhage / etiology
  • [MeSH-minor] Adolescent. Adult. Biopsy. Child. Child, Preschool. Diagnosis, Differential. Endothelium, Vascular / pathology. Female. Headache / etiology. Humans. Hyperplasia. Magnetic Resonance Imaging. Male. Middle Aged. Retrospective Studies. Telangiectasis / pathology. Tomography, X-Ray Computed


40. Bohner G, Masuhr F, Distl R, Katchanov J, Klingebiel R, Zschenderlein R, von Deimling A, van Landeghem FK: Pilocytic astrocytoma presenting as primary diffuse leptomeningeal gliomatosis: report of a unique case and review of the literature. Acta Neuropathol; 2005 Sep;110(3):306-11
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  • [Title] Pilocytic astrocytoma presenting as primary diffuse leptomeningeal gliomatosis: report of a unique case and review of the literature.
  • Spinal leptomeningeal biopsy revealed a pilocytic astrocytoma WHO grade I.
  • Sequence analysis of tumor protein 53 gene (TP53) revealed a missense mutation in exon 5, and expression of phosphatase and tensin homolog (mutated in multiple advanced cancers 1) (PTEN) protein was not detected, which may have contributed to astrocytoma development.
  • To our knowledge, this is the first definitive case of pilocytic astrocytoma presenting as PDLG.
  • [MeSH-major] Astrocytoma / pathology. Meningeal Neoplasms / pathology. Meninges / pathology. Neoplasms, Neuroepithelial / pathology. Neoplasms, Unknown Primary / pathology. Subarachnoid Space / pathology
  • [MeSH-minor] Adult. Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Biomarkers, Tumor / genetics. Brain / pathology. Brain / physiopathology. Diagnosis, Differential. Fatal Outcome. Humans. Magnetic Resonance Imaging. Male. Mutation / genetics. Spinal Cord / pathology. Spinal Cord / physiopathology. Spinal Cord Compression / etiology. Spinal Cord Compression / pathology. Spinal Cord Compression / physiopathology. Tumor Suppressor Protein p53 / genetics

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  • (PMID = 16003541.001).
  • [ISSN] 0001-6322
  • [Journal-full-title] Acta neuropathologica
  • [ISO-abbreviation] Acta Neuropathol.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Germany
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / TP53 protein, human; 0 / Tumor Suppressor Protein p53
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41. Kim SJ, Lee WY, Kim BJ, Kim JY, Hong SB, Tae WS, Seo DW: Isolated tongue tremor after removal of cerebellar pilocytic astrocytoma: Functional analysis with SPECT study. Mov Disord; 2007 Sep 15;22(12):1825-8
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  • [Title] Isolated tongue tremor after removal of cerebellar pilocytic astrocytoma: Functional analysis with SPECT study.
  • We experienced a case of isolated tongue tremor after the removal of a cerebellar pilocytic astrocytoma.
  • [MeSH-minor] Adult. Astrocytoma / surgery. Cerebellar Neoplasms / surgery. Female. Humans. Magnetic Resonance Imaging. Olivary Nucleus / pathology. Olivary Nucleus / radionuclide imaging. Red Nucleus / pathology. Red Nucleus / radionuclide imaging

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  • [Copyright] (c) 2007 Movement Disorder Society.
  • (PMID = 17657811.001).
  • [ISSN] 0885-3185
  • [Journal-full-title] Movement disorders : official journal of the Movement Disorder Society
  • [ISO-abbreviation] Mov. Disord.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
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42. Jea A, Coscarella E, Chintagumpala M, Bhattacharjee M, Whitehead WE, Curry DJ, Luerssen TG: Medulloblastoma and juvenile pilocytic astrocytoma presenting as synchronous primary brain tumors in a child: case report. J Neurosurg Pediatr; 2010 Feb;5(2):149-54
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Medulloblastoma and juvenile pilocytic astrocytoma presenting as synchronous primary brain tumors in a child: case report.
  • Multiple metastatic brain tumors and multifocal primary brain tumors of a single histological type have been published in the adult and pediatric literature.
  • Pathological examination revealed the left cerebellar and superior vermian lesions to be a juvenile pilocytic astrocytoma and a medulloblastoma, respectively.
  • To the best of the authors' knowledge, they describe the first known pediatric case in which a medulloblastoma and a juvenile pilocytic astrocytoma presented as synchronous primary brain tumors.
  • [MeSH-major] Astrocytoma / pathology. Brain Neoplasms / pathology. Cerebellar Neoplasms / pathology. Medulloblastoma / pathology


43. Daszkiewicz P, Maryniak A, Roszkowski M, Barszcz S: Long-term functional outcome of surgical treatment of juvenile pilocytic astrocytoma of the cerebellum in children. Childs Nerv Syst; 2009 Jul;25(7):855-60
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  • [Title] Long-term functional outcome of surgical treatment of juvenile pilocytic astrocytoma of the cerebellum in children.
  • PURPOSE: Increasing incidence of pediatric brain tumors and improving survival rates encouraged us to assess long-term functional outcome of patients with cerebellar juvenile pilocytic astrocytoma (JPA).
  • [MeSH-major] Astrocytoma / surgery. Cerebellar Neoplasms / surgery
  • [MeSH-minor] Adolescent. Adult. Cerebellum / surgery. Child. Child, Preschool. Education. Female. Follow-Up Studies. Humans. Infant. Male. Mood Disorders / etiology. Nervous System Diseases / etiology. Parents / psychology. Patient Satisfaction. Surveys and Questionnaires. Survival. Treatment Outcome. Young Adult

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  • (PMID = 19418058.001).
  • [ISSN] 1433-0350
  • [Journal-full-title] Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery
  • [ISO-abbreviation] Childs Nerv Syst
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Germany
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44. Maris C, Rorive S, Sandras F, D'Haene N, Sadeghi N, Bièche I, Vidaud M, Decaestecker C, Salmon I: Tenascin-C expression relates to clinicopathological features in pilocytic and diffuse astrocytomas. Neuropathol Appl Neurobiol; 2008 Jun;34(3):316-29
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Tenascin-C expression relates to clinicopathological features in pilocytic and diffuse astrocytomas.
  • AIMS: Tenascin-C (TN-C) is an extracellular matrix brain glycoprotein for which conflicting in vitro and in vivo results are reported in the literature dealing with its involvement in astrocytoma aggressiveness, in particular astrocytoma invasion.
  • In view of these conflicting results and the lack of data available on low-grade astrocytomas, the present study focuses on pilocytic World Health Organization (WHO) grade I, and diffuse WHO grade II astrocytomas, that is, two histological entities associated with very different invasive abilities.
  • METHODS: Using real-time reverse transcription polymerase chain reaction and immunohistochemistry, we analysed the TN-C expression in normal brain tissue as well as in a series of 54 pilocytic and 53 grade II astrocytomas.
  • [MeSH-major] Astrocytoma / metabolism. Astrocytoma / pathology. Brain Neoplasms / metabolism. Brain Neoplasms / pathology. Tenascin / biosynthesis
  • [MeSH-minor] Adult. Age Factors. Biomarkers, Tumor / analysis. Child. Female. Humans. Immunohistochemistry. Kaplan-Meier Estimate. Male. Neoplasm Recurrence, Local / pathology. Prognosis. Reverse Transcriptase Polymerase Chain Reaction. Spinal Cord Neoplasms / metabolism. Spinal Cord Neoplasms / mortality. Spinal Cord Neoplasms / pathology

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  • (PMID = 17983425.001).
  • [ISSN] 1365-2990
  • [Journal-full-title] Neuropathology and applied neurobiology
  • [ISO-abbreviation] Neuropathol. Appl. Neurobiol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / Tenascin
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45. Dorward IG, Luo J, Perry A, Gutmann DH, Mansur DB, Rubin JB, Leonard JR: Postoperative imaging surveillance in pediatric pilocytic astrocytomas. J Neurosurg Pediatr; 2010 Oct;6(4):346-52
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  • [Title] Postoperative imaging surveillance in pediatric pilocytic astrocytomas.
  • OBJECT: Currently there is no consensus regarding the frequency of neuroimaging following gross-total resection (GTR) of pilocytic astrocytoma (PA) in children.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Magnetic Resonance Imaging. Neoplasm Recurrence, Local / pathology. Postoperative Complications / pathology
  • [MeSH-minor] Adolescent. Antigens, CD / metabolism. Antigens, Differentiation, Myelomonocytic / metabolism. Biopsy. Child. Child, Preschool. Disease-Free Survival. Female. Humans. Infant. Kaplan-Meier Estimate. Male. Microglia / metabolism. Microglia / pathology. Predictive Value of Tests. Risk Factors. Young Adult

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  • (PMID = 20887107.001).
  • [ISSN] 1933-0715
  • [Journal-full-title] Journal of neurosurgery. Pediatrics
  • [ISO-abbreviation] J Neurosurg Pediatr
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Antigens, CD; 0 / Antigens, Differentiation, Myelomonocytic; 0 / CD68 antigen, human
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46. Tchoghandjian A, Fernandez C, Colin C, El Ayachi I, Voutsinos-Porche B, Fina F, Scavarda D, Piercecchi-Marti MD, Intagliata D, Ouafik L, Fraslon-Vanhulle C, Figarella-Branger D: Pilocytic astrocytoma of the optic pathway: a tumour deriving from radial glia cells with a specific gene signature. Brain; 2009 Jun;132(Pt 6):1523-35
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  • [Title] Pilocytic astrocytoma of the optic pathway: a tumour deriving from radial glia cells with a specific gene signature.
  • Pilocytic astrocytomas are WHO grade I gliomas that occur predominantly in childhood.
  • Understanding the molecular basis responsible for the aggressive behaviour of hypothalamo-chiasmatic pilocytic astrocytomas is a prerequisite to setting up new molecular targeted therapies.
  • We used the microarray technique to compare the transcriptional profiles of five hypothalamo-chiasmatic and six cerebellar pilocytic astrocytomas.
  • Results demonstrate that cerebellar and hypothalamo-chiasmatic pilocytic astrocytomas are two genetically distinct and topography-dependent entities.
  • Numerous genes upregulated in hypothalamo-chiasmatic pilocytic astrocytomas also increased in the developing chiasm, suggesting that developmental genes mirror the cell of origin whereas migrative, adhesive and proliferative genes reflect infiltrative properties of these tumours.
  • Of particular interest, NOTCH2, a gene expressed in radial glia and involved in gliomagenesis, was upregulated in hypothalamo-chiasmatic pilocytic astrocytomas.
  • In order to find progenitor cells that could give rise to hypothalamo-chiasmatic pilocytic astrocytomas, we performed a morphological study of the hypothalamo-chiasmatic region and identified, in the floor of the third ventricle, a unique population of vimentin- and glial fibrillary acidic protein-positive cells highly suggestive of radial glia cells.
  • Therefore, pilocytic astrocytomas of the hypothalamo-chiasmatic region should be considered as a distinct entity which probably originates from a unique population of cells with radial glia phenotype.
  • [MeSH-major] Astrocytoma / diagnosis. Optic Nerve Neoplasms / diagnosis
  • [MeSH-minor] Adolescent. Adult. Astrocytes / metabolism. Cell Proliferation. Cerebellar Neoplasms / diagnosis. Cerebellar Neoplasms / genetics. Cerebellar Neoplasms / pathology. Child. Child, Preschool. DNA, Neoplasm / genetics. Diagnosis, Differential. Gene Expression Profiling / methods. Gene Expression Regulation, Neoplastic. Humans. Hypothalamus / metabolism. Infant. Middle Aged. Neoplastic Stem Cells / pathology. Neuroglia / pathology. Oligonucleotide Array Sequence Analysis / methods. Optic Chiasm / cytology. Optic Chiasm / embryology. Optic Chiasm / metabolism. Reverse Transcriptase Polymerase Chain Reaction / methods. Up-Regulation. Vimentin / metabolism. Young Adult

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  • (PMID = 19336457.001).
  • [ISSN] 1460-2156
  • [Journal-full-title] Brain : a journal of neurology
  • [ISO-abbreviation] Brain
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / DNA, Neoplasm; 0 / Vimentin
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47. Nordfors K, Haapasalo J, Helén P, Paetau A, Paljärvi L, Kalimo H, Kinnula VL, Soini Y, Haapasalo H: Peroxiredoxins and antioxidant enzymes in pilocytic astrocytomas. Clin Neuropathol; 2007 Sep-Oct;26(5):210-8
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  • [Title] Peroxiredoxins and antioxidant enzymes in pilocytic astrocytomas.
  • In this study, their biology and clinical significance were examined in pilocytic astrocytomas (PAs).
  • RESULTS: Peroxiredoxins were strongly expressed in general suggesting that oxidative damage and consequent defense takes place during the progression of pilocytic astrocytomas.
  • CONCLUSIONS: Taken together, the results of this study on pilocytic astrocytomas suggest that the levels of Prxs and other AOEs and their related thiol proteins are generally strongly expressed in these tumors.
  • [MeSH-major] Astrocytoma / enzymology. Astrocytoma / pathology. Brain Neoplasms / enzymology. Brain Neoplasms / pathology. Peroxidases / metabolism
  • [MeSH-minor] Adolescent. Adult. Aged. Apoptosis / physiology. Child. Child, Preschool. Female. Glutamate-Cysteine Ligase / metabolism. Humans. Immunohistochemistry. In Situ Nick-End Labeling. Infant. Infant, Newborn. Kaplan-Meier Estimate. Male. Middle Aged. Peroxiredoxin VI. Peroxiredoxins. Prognosis. Superoxide Dismutase / metabolism. Thioredoxin-Disulfide Reductase / metabolism. Thioredoxins / metabolism

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  • (PMID = 17907597.001).
  • [ISSN] 0722-5091
  • [Journal-full-title] Clinical neuropathology
  • [ISO-abbreviation] Clin. Neuropathol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Germany
  • [Chemical-registry-number] 52500-60-4 / Thioredoxins; EC 1.11.1.- / Peroxidases; EC 1.11.1.15 / Peroxiredoxin VI; EC 1.11.1.15 / Peroxiredoxins; EC 1.15.1.1 / Superoxide Dismutase; EC 1.8.1.9 / Thioredoxin-Disulfide Reductase; EC 6.3.2.2 / Glutamate-Cysteine Ligase
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48. Parsa CF, Givrad S: Juvenile pilocytic astrocytomas do not undergo spontaneous malignant transformation: grounds for designation as hamartomas. Br J Ophthalmol; 2008 Jan;92(1):40-6
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  • [Title] Juvenile pilocytic astrocytomas do not undergo spontaneous malignant transformation: grounds for designation as hamartomas.
  • AIM: To determine whether juvenile pilocytic astrocytomas WHO grade I have the potential for spontaneous malignant transformation.
  • METHODS: A literature search was performed, cross-referencing juvenile pilocytic astrocytoma, pilocytic astrocytoma, astrocytoma grade I, optic glioma, glioma, low-grade gliomas, polar spongioblastoma, gliocytoma embryonale, and malignant transformation, anaplasia or anaplastic change.
  • Twenty-two of these tumours, however, did not initially match criteria for juvenile pilocytic astrocytoma WHO grade I and were excluded.
  • CONCLUSION: Juvenile pilocytic astrocytomas WHO grade I do not undergo spontaneous anaplastic transformation.
  • Earlier clinical and histopathological opinions regarding juvenile pilocytic astrocytomas as hamartomatous lesions are reaffirmed.
  • [MeSH-major] Astrocytoma / pathology. Brain Diseases / pathology. Brain Neoplasms / pathology. Cell Transformation, Neoplastic / pathology. Hamartoma / pathology
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Disease Progression. Humans. Middle Aged. Neoplasms, Radiation-Induced / etiology. Neoplasms, Second Primary / etiology

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  • (PMID = 17962395.001).
  • [ISSN] 1468-2079
  • [Journal-full-title] The British journal of ophthalmology
  • [ISO-abbreviation] Br J Ophthalmol
  • [Language] eng
  • [Publication-type] Journal Article; Review
  • [Publication-country] England
  • [Number-of-references] 90
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49. Grand SD, Kremer S, Tropres IM, Hoffmann DM, Chabardes SJ, Lefournier V, Berger FR, Pasteris C, Krainik A, Pasquier BM, Peoch M, Le Bas JF: Perfusion-sensitive MRI of pilocytic astrocytomas: initial results. Neuroradiology; 2007 Jul;49(7):545-50
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  • [Title] Perfusion-sensitive MRI of pilocytic astrocytomas: initial results.
  • PURPOSE: To present the imaging and perfusion data obtained in nine patients with pilocytic astrocytomas (PA) and to discuss the original functional issues of this technique.
  • [MeSH-major] Astrocytoma / diagnosis. Astrocytoma / physiopathology. Blood Volume. Brain Neoplasms / diagnosis. Brain Neoplasms / physiopathology. Magnetic Resonance Angiography
  • [MeSH-minor] Adolescent. Adult. Cerebrovascular Circulation / physiology. Child. Contrast Media. Female. Gadolinium DTPA. Humans. Male. Retrospective Studies

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  • (PMID = 17530237.001).
  • [ISSN] 0028-3940
  • [Journal-full-title] Neuroradiology
  • [ISO-abbreviation] Neuroradiology
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Germany
  • [Chemical-registry-number] 0 / Contrast Media; K2I13DR72L / Gadolinium DTPA
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50. Rorive S, Maris C, Debeir O, Sandras F, Vidaud M, Bièche I, Salmon I, Decaestecker C: Exploring the distinctive biological characteristics of pilocytic and low-grade diffuse astrocytomas using microarray gene expression profiles. J Neuropathol Exp Neurol; 2006 Aug;65(8):794-807
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  • [Title] Exploring the distinctive biological characteristics of pilocytic and low-grade diffuse astrocytomas using microarray gene expression profiles.
  • Although World Health Organization (WHO) grade I pilocytic astrocytomas and grade II diffuse astrocytomas have been classified for decades as different clinicopathologic entities, few, if any, data are available on the biologic features explaining these differences.
  • We have incorporated these data into a comparative analysis for the purpose of identifying the most relevant molecular markers characterizing grade I pilocytic and grade II diffuse astrocytomas.
  • The end products (proteins) of these genes act as antimigratory compounds, a fact that could explain why pilocytic astrocytomas behave as compact (well-circumscribed) tumors as opposed to all the other astrocytic tumor types that diffusely invade the brain parenchyma.
  • Having validated these molecular markers by means of real-time reverse transcriptase-polymerase chain reaction, an integrated model was proposed illustrating how and why pilocytic astrocytomas constitute a distinct biologic and pathologic entity when compared with diffuse astrocytomas.
  • [MeSH-major] Astrocytoma / genetics. Biomarkers, Tumor / genetics. Brain Neoplasms / genetics. Gene Expression Profiling / methods. Gene Expression Regulation, Neoplastic / genetics. Genetic Predisposition to Disease / genetics
  • [MeSH-minor] Adult. Cell Adhesion / genetics. Cell Movement / genetics. Child. Extracellular Matrix Proteins / genetics. Extracellular Matrix Proteins / metabolism. Humans. Models, Neurological. Neoplasm Invasiveness / genetics. Neoplasm Invasiveness / physiopathology. Oligonucleotide Array Sequence Analysis / methods. Reverse Transcriptase Polymerase Chain Reaction

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  • (PMID = 16896313.001).
  • [ISSN] 0022-3069
  • [Journal-full-title] Journal of neuropathology and experimental neurology
  • [ISO-abbreviation] J. Neuropathol. Exp. Neurol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / Extracellular Matrix Proteins
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51. Kano H, Kondziolka D, Niranjan A, Flickinger JC, Lunsford LD: Stereotactic radiosurgery for pilocytic astrocytomas part 1: outcomes in adult patients. J Neurooncol; 2009 Nov;95(2):211-218
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  • [Title] Stereotactic radiosurgery for pilocytic astrocytomas part 1: outcomes in adult patients.
  • To assess outcomes when stereotactic radiosurgery (SRS) is used during multimodality management of pilocytic astrocytomas in adult patients.
  • Fourteen patients (six male and eight females) with pilocytic astrocytomas underwent SRS between 1994 and 2006.
  • Despite their purported benign nature, pilocytic astrocytomas in adult patients often do not behave benignly.
  • Unresectable pilocytic astrocytomas that are located in critical or deep areas of the brain require additional management approaches.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Neoplasm Recurrence, Local / surgery. Radiosurgery
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Humans. Male. Prognosis. Survival Rate. Treatment Outcome. Young Adult

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  • (PMID = 19468691.001).
  • [ISSN] 1573-7373
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
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52. Omura T, Nawashiro H, Osada H, Shima K, Tsuda H, Shinsuke A: Pilomyxoid astrocytoma of the fourth ventricle in an adult. Acta Neurochir (Wien); 2008 Nov;150(11):1203-6; discussion 1206

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  • [Title] Pilomyxoid astrocytoma of the fourth ventricle in an adult.
  • Pilomyxoid astrocytomas have been identified as a variant of pilocytic astrocytoma.
  • This tumour corresponds to a WHO grade II neoplasm whereas pilocytic astrocytoma corresponds to WHO grade I.
  • We have encountered an infratentorial tumour with pilomyxoid features in an adult.
  • Additional knowledge and recognition of this entity is necessary to improve treatment of pilomyxoid astrocytoma.
  • [MeSH-major] Astrocytoma / pathology. Cerebral Ventricle Neoplasms / pathology. Fourth Ventricle / pathology
  • [MeSH-minor] Adult. Age Distribution. Biomarkers, Tumor / analysis. Biomarkers, Tumor / metabolism. Cranial Nerve Diseases / etiology. Cranial Nerve Diseases / physiopathology. Humans. Hyperacusis / etiology. Magnetic Resonance Imaging. Male. Neurosurgical Procedures. Postoperative Complications / etiology. Postoperative Complications / physiopathology. Tinnitus / etiology. Treatment Outcome

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  • (PMID = 18958385.001).
  • [ISSN] 0942-0940
  • [Journal-full-title] Acta neurochirurgica
  • [ISO-abbreviation] Acta Neurochir (Wien)
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Austria
  • [Chemical-registry-number] 0 / Biomarkers, Tumor
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53. Sharma MK, Mansur DB, Reifenberger G, Perry A, Leonard JR, Aldape KD, Albin MG, Emnett RJ, Loeser S, Watson MA, Nagarajan R, Gutmann DH: Distinct genetic signatures among pilocytic astrocytomas relate to their brain region origin. Cancer Res; 2007 Feb 1;67(3):890-900
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  • [Title] Distinct genetic signatures among pilocytic astrocytomas relate to their brain region origin.
  • Pilocytic astrocytomas (PAs) are the most common glioma in children.
  • [MeSH-major] Astrocytoma / genetics. Infratentorial Neoplasms / genetics. Supratentorial Neoplasms / genetics
  • [MeSH-minor] Adolescent. Adult. Algorithms. Child. Child, Preschool. Cluster Analysis. Female. Gene Expression Profiling. Humans. Male. Middle Aged. Neurofibromatosis 1 / genetics. Neurofibromatosis 1 / metabolism. Neurofibromatosis 1 / pathology. Oligonucleotide Array Sequence Analysis

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  • (PMID = 17283119.001).
  • [ISSN] 0008-5472
  • [Journal-full-title] Cancer research
  • [ISO-abbreviation] Cancer Res.
  • [Language] eng
  • [Databank-accession-numbers] GEO/ GSE5582/ GSE5675
  • [Grant] United States / NCI NIH HHS / CA / P30 CA 91842
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
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54. Linscott LL, Osborn AG, Blaser S, Castillo M, Hewlett RH, Wieselthaler N, Chin SS, Krakenes J, Hedlund GL, Sutton CL: Pilomyxoid astrocytoma: expanding the imaging spectrum. AJNR Am J Neuroradiol; 2008 Nov;29(10):1861-6
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  • [Title] Pilomyxoid astrocytoma: expanding the imaging spectrum.
  • BACKGROUND AND PURPOSE: Pilomyxoid astrocytoma (PMA) is a recently described variant of pilocytic astrocytoma (PA) with unique clinical and histopathologic characteristics.
  • [MeSH-major] Astrocytoma / classification. Astrocytoma / diagnosis. Brain Neoplasms / classification. Brain Neoplasms / diagnosis. Magnetic Resonance Imaging / methods. Tomography, X-Ray Computed / methods
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Humans. Infant. Internationality. Male. Middle Aged. Retrospective Studies. Young Adult

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  • (PMID = 18701580.001).
  • [ISSN] 1936-959X
  • [Journal-full-title] AJNR. American journal of neuroradiology
  • [ISO-abbreviation] AJNR Am J Neuroradiol
  • [Language] eng
  • [Publication-type] Journal Article; Multicenter Study
  • [Publication-country] United States
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55. Porto L, Kieslich M, Franz K, Lehrbecher T, Vlaho S, Pilatus U, Hattingen E: Spectroscopy of untreated pilocytic astrocytomas: do children and adults share some metabolic features in addition to their morphologic similarities? Childs Nerv Syst; 2010 Jun;26(6):801-6
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  • [Title] Spectroscopy of untreated pilocytic astrocytomas: do children and adults share some metabolic features in addition to their morphologic similarities?
  • OBJECTIVE: Pilocytic astrocytomas may show heterogeneous histopathological and imaging features which are commonly attributed to malignant gliomas.
  • Using magnetic resonance (MR) spectroscopy, we assessed if pilocytic astrocytomas show increased choline (tCho), classically related to proliferation and malignancy of gliomas.
  • METHODS: Sixteen patients (five adults, age 20-55 years and 11 children, age 6 months-15 years) with histologically proven pilocytic astrocytomas were evaluated retrospectively.
  • RESULTS: The tCho levels covered a wide range with a trend towards elevated values, especially in the adult group. tCho levels ranged from 0.78 to 2.92 in the paediatric group (mean 1.15) and from 1.15 to 3.03 in the adult group (mean 1.35).
  • CONCLUSIONS: The well-known positive correlation between increase of tCho and the grade of gliomas seems to be violated by WHO grade I pilocytic astrocytomas showing a wide range of tCho values with an even marked increase in some cases.
  • No significant differences have been identified in the MR spectroscopy metabolite profiles between paediatric and adult pilocytic astrocytomas.
  • [MeSH-major] Astrocytoma / metabolism. Brain Neoplasms / metabolism
  • [MeSH-minor] Adolescent. Adult. Age Factors. Brain / metabolism. Brain / pathology. Child. Child, Preschool. Choline / metabolism. Creatine / metabolism. Female. Humans. Infant. Magnetic Resonance Spectroscopy / methods. Male. Middle Aged. Protons. Retrospective Studies. Treatment Outcome. Young Adult

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  • (PMID = 20091040.001).
  • [ISSN] 1433-0350
  • [Journal-full-title] Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery
  • [ISO-abbreviation] Childs Nerv Syst
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Germany
  • [Chemical-registry-number] 0 / Protons; MU72812GK0 / Creatine; N91BDP6H0X / Choline
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56. Wemmert S, Romeike BF, Ketter R, Steudel WI, Zang KD, Urbschat S: Intratumoral genetic heterogeneity in pilocytic astrocytomas revealed by CGH-analysis of microdissected tumor cells and FISH on tumor tissue sections. Int J Oncol; 2006 Feb;28(2):353-60
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  • [Title] Intratumoral genetic heterogeneity in pilocytic astrocytomas revealed by CGH-analysis of microdissected tumor cells and FISH on tumor tissue sections.
  • Pilocytic astrocytomas are the most frequent gliomas of childhood.
  • Although in diffuse gliomas TP53 gene mutations or deletions occur with significant frequency, the role in pilocytic astrocytomas remains unclear.
  • Histomorphologically different areas of 14 pilocytic astrocytomas were microdissected and analyzed for genetic aberrations and heterogeneity.
  • In conclusion, pilocytic astrocytomas show a genetic heterogeneity associated with variations of histologic structure as well as an intratumoral heterogeneity observed on single cell level by FISH.
  • [MeSH-major] Astrocytoma / genetics. Central Nervous System Neoplasms / genetics. Genes, p53. Genetic Heterogeneity
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Chromosome Aberrations. Chromosomes, Human, Pair 17. Chromosomes, Human, Pair 7. Chromosomes, Human, Pair 8. Female. Humans. In Situ Hybridization, Fluorescence. Infant. Male. Microdissection. Monosomy. Nucleic Acid Hybridization

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  • (PMID = 16391789.001).
  • [ISSN] 1019-6439
  • [Journal-full-title] International journal of oncology
  • [ISO-abbreviation] Int. J. Oncol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Greece
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57. Forshew T, Tatevossian RG, Lawson AR, Ma J, Neale G, Ogunkolade BW, Jones TA, Aarum J, Dalton J, Bailey S, Chaplin T, Carter RL, Gajjar A, Broniscer A, Young BD, Ellison DW, Sheer D: Activation of the ERK/MAPK pathway: a signature genetic defect in posterior fossa pilocytic astrocytomas. J Pathol; 2009 Jun;218(2):172-81
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  • [Title] Activation of the ERK/MAPK pathway: a signature genetic defect in posterior fossa pilocytic astrocytomas.
  • We report genetic aberrations that activate the ERK/MAP kinase pathway in 100% of posterior fossa pilocytic astrocytomas, with a high frequency of gene fusions between KIAA1549 and BRAF among these tumours.
  • An activating mutation of KRAS was identified in the single pilocytic astrocytoma without a BRAF or RAF1 fusion.
  • [MeSH-major] Astrocytoma / enzymology. Brain Neoplasms / enzymology. MAP Kinase Signaling System / physiology. Mitogen-Activated Protein Kinases / metabolism
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. DNA Mutational Analysis. DNA, Complementary / analysis. Enzyme Activation. GTPase-Activating Proteins / genetics. Humans. Infant. Oncogene Proteins, Fusion / genetics. Proto-Oncogene Proteins B-raf / genetics. Proto-Oncogene Proteins c-raf / genetics. Young Adult

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  • [CommentIn] J Pathol. 2010 Dec;222(4):324-8 [20976706.001]
  • (PMID = 19373855.001).
  • [ISSN] 1096-9896
  • [Journal-full-title] The Journal of pathology
  • [ISO-abbreviation] J. Pathol.
  • [Language] eng
  • [Grant] United Kingdom / Cancer Research UK / / CRUK/ A8318; United Kingdom / Cancer Research UK / / C5321/A8318
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / DNA, Complementary; 0 / GTPase-Activating Proteins; 0 / Oncogene Proteins, Fusion; 0 / SRGAP3 protein, human; EC 2.7.11.1 / BRAF protein, human; EC 2.7.11.1 / Proto-Oncogene Proteins B-raf; EC 2.7.11.1 / Proto-Oncogene Proteins c-raf; EC 2.7.11.24 / Mitogen-Activated Protein Kinases
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58. El Ayachi I, Baeza N, Fernandez C, Colin C, Scavarda D, Pesheva P, Figarella-Branger D: KIAA0510, the 3'-untranslated region of the tenascin-R gene, and tenascin-R are overexpressed in pilocytic astrocytomas. Neuropathol Appl Neurobiol; 2010 Aug;36(5):399-410

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  • [Title] KIAA0510, the 3'-untranslated region of the tenascin-R gene, and tenascin-R are overexpressed in pilocytic astrocytomas.
  • We took advantage of our previous study focused on genes that were critical in tumour invasion to further study here an unknown sequence, referred to as KIAA0510, the chromosomal location of which was 1q25, described as a 5596-bp long mRNA and that we found to be significantly overexpressed in pilocytic astrocytomas compared with glioblastomas.
  • We have clearly confirmed the overexpression of tenascin-R in pilocytic astrocytomas vs. glioblastomas at mRNA and protein levels.
  • CONCLUSION: KIAA0510, the 3'-untranslated region of the tenascin-R gene, and tenascin-R are overexpressed in pilocytic astrocytomas.
  • Gangliogliomas shared with pilocytic astrocytomas strong tenascin-R expression.
  • [MeSH-major] Astrocytoma / genetics. Cerebellar Neoplasms / genetics. Gene Expression Regulation, Neoplastic. Tenascin / genetics
  • [MeSH-minor] 3' Untranslated Regions / genetics. Adolescent. Adult. Aged. Child. Child, Preschool. Ependymoma / genetics. Ependymoma / physiopathology. Ganglioglioma / genetics. Ganglioglioma / physiopathology. Humans. Infant. Meningeal Neoplasms / genetics. Meningeal Neoplasms / physiopathology. Meningioma / genetics. Meningioma / physiopathology. Middle Aged. Supratentorial Neoplasms / genetics. Supratentorial Neoplasms / physiopathology. Young Adult

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  • (PMID = 20202125.001).
  • [ISSN] 1365-2990
  • [Journal-full-title] Neuropathology and applied neurobiology
  • [ISO-abbreviation] Neuropathol. Appl. Neurobiol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / 3' Untranslated Regions; 0 / Tenascin; 147604-77-1 / tenascin R
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59. Murakami R, Hirai T, Kitajima M, Fukuoka H, Toya R, Nakamura H, Kuratsu J, Yamashita Y: Magnetic resonance imaging of pilocytic astrocytomas: usefulness of the minimum apparent diffusion coefficient (ADC) value for differentiation from high-grade gliomas. Acta Radiol; 2008 May;49(4):462-7
Hazardous Substances Data Bank. GADOPENTETATE DIMEGLUMINE .

  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Magnetic resonance imaging of pilocytic astrocytomas: usefulness of the minimum apparent diffusion coefficient (ADC) value for differentiation from high-grade gliomas.
  • BACKGROUND: On contrast-enhanced magnetic resonance (MR) images, pilocytic astrocytomas (PAs) are usually well-enhanced tumors that may mimic high-grade gliomas (HGGs).
  • [MeSH-major] Astrocytoma / pathology. Diffusion Magnetic Resonance Imaging / methods
  • [MeSH-minor] Adolescent. Adult. Aged. Child. Child, Preschool. Contrast Media / administration & dosage. Female. Gadolinium DTPA / administration & dosage. Humans. Male. Middle Aged. Retrospective Studies. Statistics, Nonparametric

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  • (PMID = 18415792.001).
  • [ISSN] 1600-0455
  • [Journal-full-title] Acta radiologica (Stockholm, Sweden : 1987)
  • [ISO-abbreviation] Acta Radiol
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Sweden
  • [Chemical-registry-number] 0 / Contrast Media; K2I13DR72L / Gadolinium DTPA
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60. Minehan KJ, Brown PD, Scheithauer BW, Krauss WE, Wright MP: Prognosis and treatment of spinal cord astrocytoma. Int J Radiat Oncol Biol Phys; 2009 Mar 1;73(3):727-33
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  • [Title] Prognosis and treatment of spinal cord astrocytoma.
  • PURPOSE: To identify the prognostic factors for spinal cord astrocytoma and determine the effects of surgery and radiotherapy on outcome.
  • METHODS AND MATERIALS: This retrospective study reviewed the cases of consecutive patients with spinal cord astrocytoma treated at Mayo Clinic Rochester between 1962 and 2005.
  • Of these 136 patients, 69 had pilocytic and 67 had infiltrative astrocytoma.
  • Patients with pilocytic tumors survived significantly longer than those with infiltrative astrocytomas (median overall survival, 39.9 vs. 1.85 years; p < 0.001).
  • Patients who underwent resection had a worse, although nonsignificant, median survival than those who underwent biopsy only (pilocytic, 18.1 vs. 39.9 years, p = 0.07; infiltrative, 19 vs. 30 months, p = 0.14).
  • Postoperative radiotherapy, delivered in 75% of cases, gave no significant survival benefit for those with pilocytic tumors (39.9 vs. 18.1 years, p = 0.33) but did for those with infiltrative astrocytomas (24 vs. 3 months; Wilcoxon p = 0.006).
  • On multivariate analysis, pilocytic histologic type, diagnosis after 1984, longer symptom duration, younger age, minimal surgical extent, and postoperative radiotherapy predicted better outcome.
  • Postoperative radiotherapy significantly improved survival for patients with infiltrative astrocytomas but not for those with pilocytic tumors.
  • [MeSH-major] Astrocytoma / radiotherapy. Astrocytoma / surgery. Spinal Cord Neoplasms / radiotherapy. Spinal Cord Neoplasms / surgery
  • [MeSH-minor] Adult. Analysis of Variance. Combined Modality Therapy. Female. Humans. Male. Middle Aged. Prognosis. Retrospective Studies. Survival Analysis. Treatment Outcome. Young Adult

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  • (PMID = 18687533.001).
  • [ISSN] 1879-355X
  • [Journal-full-title] International journal of radiation oncology, biology, physics
  • [ISO-abbreviation] Int. J. Radiat. Oncol. Biol. Phys.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
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61. Rodriguez FJ, Giannini C, Asmann YW, Sharma MK, Perry A, Tibbetts KM, Jenkins RB, Scheithauer BW, Anant S, Jenkins S, Eberhart CG, Sarkaria JN, Gutmann DH: Gene expression profiling of NF-1-associated and sporadic pilocytic astrocytoma identifies aldehyde dehydrogenase 1 family member L1 (ALDH1L1) as an underexpressed candidate biomarker in aggressive subtypes. J Neuropathol Exp Neurol; 2008 Dec;67(12):1194-204
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  • [Title] Gene expression profiling of NF-1-associated and sporadic pilocytic astrocytoma identifies aldehyde dehydrogenase 1 family member L1 (ALDH1L1) as an underexpressed candidate biomarker in aggressive subtypes.
  • Pilocytic astrocytomas (PAs) are World Health Organization Grade I gliomas; they most often affect children and young adults and occur in patients with neurofibromatosis type 1 (NF1).

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  • (PMID = 19018242.001).
  • [ISSN] 0022-3069
  • [Journal-full-title] Journal of neuropathology and experimental neurology
  • [ISO-abbreviation] J. Neuropathol. Exp. Neurol.
  • [Language] ENG
  • [Grant] United States / NCI NIH HHS / CA / P50 CA108961; United States / NINDS NIH HHS / NS / T32 NS007494; United States / NINDS NIH HHS / NS / NS007494-05; United States / NINDS NIH HHS / NS / T32 NS07494-04; United States / NINDS NIH HHS / NS / T32 NS007494-05
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / Isoenzymes; 0 / Nerve Tissue Proteins; EC 1.2.1.- / aldehyde dehydrogenase 1; EC 1.2.1.3 / Aldehyde Dehydrogenase; EC 1.2.1.36 / Retinal Dehydrogenase; EC 1.5.1.6 / ALDH1L1 protein, human
  • [Other-IDs] NLM/ NIHMS87254; NLM/ PMC2730602
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62. Jones DT, Ichimura K, Liu L, Pearson DM, Plant K, Collins VP: Genomic analysis of pilocytic astrocytomas at 0.97 Mb resolution shows an increasing tendency toward chromosomal copy number change with age. J Neuropathol Exp Neurol; 2006 Nov;65(11):1049-58
SciCrunch. ArrayExpress: Data: Microarray .

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  • [Title] Genomic analysis of pilocytic astrocytomas at 0.97 Mb resolution shows an increasing tendency toward chromosomal copy number change with age.
  • Pilocytic astrocytomas (PAs), World Health Organization grade I, are one of the most frequently occurring childhood brain tumors, yet little is known about genetic changes characterizing this entity.
  • This is the first genomewide study to show this nonrandom pattern of genetic alteration in pilocytic astrocytomas.
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / genetics. Gene Dosage. Oligonucleotide Array Sequence Analysis
  • [MeSH-minor] Adolescent. Adult. Age Factors. Antigens, CD / metabolism. Antigens, CD45 / metabolism. Antigens, Differentiation, Myelomonocytic / metabolism. Child. Child, Preschool. Female. Humans. Immunohistochemistry. In Situ Hybridization, Fluorescence. Infant. Male. Microglia / metabolism. Microsatellite Repeats

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  • (PMID = 17086101.001).
  • [ISSN] 0022-3069
  • [Journal-full-title] Journal of neuropathology and experimental neurology
  • [ISO-abbreviation] J. Neuropathol. Exp. Neurol.
  • [Language] eng
  • [Grant] United Kingdom / Cancer Research UK / / CRUK/ A6618
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Antigens, CD; 0 / Antigens, Differentiation, Myelomonocytic; 0 / CD68 antigen, human; EC 3.1.3.48 / Antigens, CD45
  • [Other-IDs] NLM/ PMC2761618; NLM/ UKMS2694
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63. Kumar VA, Knopp EA, Zagzag D: Magnetic resonance dynamic susceptibility-weighted contrast-enhanced perfusion imaging in the diagnosis of posterior fossa hemangioblastomas and pilocytic astrocytomas: initial results. J Comput Assist Tomogr; 2010 Nov-Dec;34(6):825-9
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Magnetic resonance dynamic susceptibility-weighted contrast-enhanced perfusion imaging in the diagnosis of posterior fossa hemangioblastomas and pilocytic astrocytomas: initial results.
  • OBJECTIVE: The purpose of this study was to compare the dynamic susceptibility-weighted contrast-enhanced (DSC) magnetic resonance (MR) perfusion and MR imaging findings between hemangioblastomas and pilocytic astrocytoma (PA).
  • [MeSH-major] Astrocytoma / diagnosis. Hemangioblastoma / diagnosis. Infratentorial Neoplasms / diagnosis. Magnetic Resonance Imaging / methods
  • [MeSH-minor] Adolescent. Adult. Aged. Child. Child, Preschool. Contrast Media. Edema / diagnosis. Female. Gadolinium DTPA. Humans. Image Interpretation, Computer-Assisted. Male. Middle Aged. Retrospective Studies

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  • (PMID = 21084895.001).
  • [ISSN] 1532-3145
  • [Journal-full-title] Journal of computer assisted tomography
  • [ISO-abbreviation] J Comput Assist Tomogr
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Contrast Media; K2I13DR72L / Gadolinium DTPA
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64. Chen L, Wang Y, Zhu XZ: [Pilomyxoid astrocytoma: a clinicopathologic study of three cases]. Zhonghua Bing Li Xue Za Zhi; 2006 Dec;35(12):727-30

  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] [Pilomyxoid astrocytoma: a clinicopathologic study of three cases].
  • OBJECTIVE: To study the clinicopathologic features of pilomyxoid astrocytoma (PmA).
  • The biphasic pattern noted in a classic pilocytic astrocytoma was not found in PmA.
  • CONCLUSIONS: PmA is a distinctive variant of pilocytic astrocytoma with subtle histologic differences.
  • Compared with conventional pilocytic astrocytoma, PmA behaves more aggressively.
  • [MeSH-major] Astrocytoma / pathology. Cerebral Ventricle Neoplasms / pathology. Optic Nerve Glioma / pathology. Third Ventricle / pathology
  • [MeSH-minor] Antigens, CD34 / metabolism. Child. Diagnosis, Differential. Female. Follow-Up Studies. Glial Fibrillary Acidic Protein / metabolism. Humans. Immunohistochemistry. Infant. Ki-67 Antigen / metabolism. Magnetic Resonance Imaging. Tomography, X-Ray Computed. Young Adult

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  • (PMID = 17374256.001).
  • [ISSN] 0529-5807
  • [Journal-full-title] Zhonghua bing li xue za zhi = Chinese journal of pathology
  • [ISO-abbreviation] Zhonghua Bing Li Xue Za Zhi
  • [Language] chi
  • [Publication-type] English Abstract; Journal Article
  • [Publication-country] China
  • [Chemical-registry-number] 0 / Antigens, CD34; 0 / Glial Fibrillary Acidic Protein; 0 / Ki-67 Antigen
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65. Slatter T, Gifford-Garner J, Wiles A, Tan X, Chen YJ, MacFarlane M, Sullivan M, Royds J, Hung N: Pilocytic astrocytomas have telomere-associated promyelocytic leukemia bodies without alternatively lengthened telomeres. Am J Pathol; 2010 Dec;177(6):2694-700
MedlinePlus Health Information. consumer health - Childhood Brain Tumors.

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  • [Title] Pilocytic astrocytomas have telomere-associated promyelocytic leukemia bodies without alternatively lengthened telomeres.

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  • (PMID = 21037079.001).
  • [ISSN] 1525-2191
  • [Journal-full-title] The American journal of pathology
  • [ISO-abbreviation] Am. J. Pathol.
  • [Language] ENG
  • [Grant] United Kingdom / Cancer Research UK / /
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Nuclear Proteins; 0 / Transcription Factors; 0 / Tumor Suppressor Proteins; 143220-95-5 / PML protein, human
  • [Other-IDs] NLM/ PMC2993310
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71. Kondageski C, Pierre-Kahn A, Carbonne B, Brunelle F: Association of a fetal quadrigeminal cyst with a possibly congenital thalamic astrocytoma. Childs Nerv Syst; 2005 Apr;21(4):317-21
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  • [Title] Association of a fetal quadrigeminal cyst with a possibly congenital thalamic astrocytoma.
  • CASE REPORT: This article reports on the exceptional association of a fetal quadrigeminal malformative cyst with a possibly congenital pilocytic astrocytoma of the pulvinar.
  • [MeSH-major] Astrocytoma / complications. Brain Neoplasms / complications. Cerebral Aqueduct / pathology. Fetal Diseases / pathology. Pulvinar / pathology
  • [MeSH-minor] Adult. Cysts. Female. Fetus. Humans. Magnetic Resonance Imaging / methods. Pregnancy

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  • (PMID = 15459783.001).
  • [ISSN] 0256-7040
  • [Journal-full-title] Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery
  • [ISO-abbreviation] Childs Nerv Syst
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Germany
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72. van den Bent MJ, Afra D, de Witte O, Ben Hassel M, Schraub S, Hoang-Xuan K, Malmström PO, Collette L, Piérart M, Mirimanoff R, Karim AB, EORTC Radiotherapy and Brain Tumor Groups and the UK Medical Research Council: Long-term efficacy of early versus delayed radiotherapy for low-grade astrocytoma and oligodendroglioma in adults: the EORTC 22845 randomised trial. Lancet; 2005 Sep 17-23;366(9490):985-90
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  • [Title] Long-term efficacy of early versus delayed radiotherapy for low-grade astrocytoma and oligodendroglioma in adults: the EORTC 22845 randomised trial.
  • Patients with low-grade astrocytoma, oligodendroglioma, mixed oligoastrocytoma, and incompletely resected pilocytic astrocytoma, with a WHO performance status 0-2 were eligible.
  • [MeSH-major] Astrocytoma / radiotherapy. Central Nervous System Neoplasms / radiotherapy. Oligodendroglioma / radiotherapy
  • [MeSH-minor] Adolescent. Adult. Aged. Disease Progression. Disease-Free Survival. Female. Humans. Male. Middle Aged. Radiotherapy Dosage. Survival Rate

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  • [CommentIn] Lancet Oncol. 2005 Dec;6(12):921; author reply 922 [16321759.001]
  • [ErratumIn] Lancet. 2006 Jun 3;367(9525):1818
  • (PMID = 16168780.001).
  • [ISSN] 1474-547X
  • [Journal-full-title] Lancet (London, England)
  • [ISO-abbreviation] Lancet
  • [Language] eng
  • [Grant] United States / NCI NIH HHS / CA / 5U10 CA11488-; United States / NCI NIH HHS / CA / 5U10 CA11488-16
  • [Publication-type] Clinical Trial; Comparative Study; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.
  • [Publication-country] England
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73. Toyoda K, Tsutsumi K, Ono T, Takahata H, Toda K, Ito M, Sugita Y, Masuda T, Ichinose K, Baba H, Yonekura M: [Pilomyxoid astrocytoma presenting in an elderly patient: a case report]. No Shinkei Geka; 2009 Nov;37(11):1123-8
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  • [Title] [Pilomyxoid astrocytoma presenting in an elderly patient: a case report].
  • The pathological diagnosis was pilomyxoid astrocytoma (PMA).
  • To our knowledge, there are only four adult cases being reported.
  • The treatment strategy described in infant cases is similar to that for pilocytic astrocytoma, but there are only few reports.
  • To establish a treatment protocol for adult patients, further more cases are needed to accumulate knowledge of this rare brain tumor.
  • [MeSH-major] Astrocytoma / pathology. Brain Neoplasms / pathology

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  • (PMID = 19938670.001).
  • [ISSN] 0301-2603
  • [Journal-full-title] No shinkei geka. Neurological surgery
  • [ISO-abbreviation] No Shinkei Geka
  • [Language] jpn
  • [Publication-type] Case Reports; English Abstract; Journal Article
  • [Publication-country] Japan
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74. Zhang K, Li C, Liu Y, Li L, Ma X, Meng X, Feng D: Evaluation of invasiveness of astrocytoma using 1H-magnetic resonance spectroscopy: correlation with expression of matrix metalloproteinase-2. Neuroradiology; 2007 Nov;49(11):913-9
Hazardous Substances Data Bank. CHOLINE CHLORIDE .

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  • [Title] Evaluation of invasiveness of astrocytoma using 1H-magnetic resonance spectroscopy: correlation with expression of matrix metalloproteinase-2.
  • So to assess the invasive potential of astrocytoma is very important.
  • The aim of this study was determine whether there is a significant correlation between the results of (1)H-magnetic resonance spectroscopy ((1)H-MRS) and tumor invasive potential of astrocytoma, which is reflected by expression of matrix metalloproteinase-2 (MMP-2).
  • According to the World Health Organization classification criteria for central nervous system tumors, there were 16 low-grade astrocytomas (2 pilocytic astrocytomas, 14 grade II astrocytomas) and 25 high-grade astrocytomas (5 anaplastic astrocytomas, 20 glioblastomas).The choline/N-acetylaspartate (Cho/NAA) and choline/creatine (Cho/Cr) ratios were calculated.
  • RESULTS: The Cho/NAA and Cho/Cr ratios of high-grade astrocytoma were both significantly greater than those of low-grade astrocytoma (t = -6.222, P = 0.000; t = -6.533, P = 0.000, respectively).
  • [MeSH-major] Astrocytoma / metabolism. Astrocytoma / pathology. Brain Neoplasms / metabolism. Brain Neoplasms / pathology. Magnetic Resonance Spectroscopy. Matrix Metalloproteinase 2 / metabolism
  • [MeSH-minor] Adolescent. Adult. Aged. Aspartic Acid / analogs & derivatives. Aspartic Acid / metabolism. Choline / metabolism. Creatine / metabolism. Female. Humans. Male. Middle Aged. Neoplasm Invasiveness. Predictive Value of Tests. Treatment Outcome

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  • (PMID = 17763847.001).
  • [ISSN] 0028-3940
  • [Journal-full-title] Neuroradiology
  • [ISO-abbreviation] Neuroradiology
  • [Language] eng
  • [Publication-type] Clinical Trial; Journal Article
  • [Publication-country] Germany
  • [Chemical-registry-number] 30KYC7MIAI / Aspartic Acid; 997-55-7 / N-acetylaspartate; EC 3.4.24.24 / Matrix Metalloproteinase 2; MU72812GK0 / Creatine; N91BDP6H0X / Choline
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75. Birlik B, Canda S, Ozer E: Tumour vascularity is of prognostic significance in adult, but not paediatric astrocytomas. Neuropathol Appl Neurobiol; 2006 Oct;32(5):532-8
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  • [Title] Tumour vascularity is of prognostic significance in adult, but not paediatric astrocytomas.
  • Due to the evidence that vascular changes are important histological features of astrocytomas, the aim of this study was to investigate prognostic significance of tumour vascularity in paediatric and adult astrocytomas.
  • Study population consisted of 70 patients (45 adult and 25 children) with histologically proven diagnosis of astrocytoma with no history of previous therapy.
  • In contrast to the results in paediatric astrocytomas, tumour vascularity in adult tumours correlated significantly with postoperative survival by univariate analysis (P < 0.05).
  • We conclude that histological quantification of tumour vascularity is a significant prognosticator in adult astrocytomas, but not in children.
  • Our data do not support the validity of applications of antiangiogenic agents in paediatric astrocytic tumours, particularly pilocytic astrocytomas.
  • [MeSH-major] Aging / pathology. Astrocytoma / blood supply. Astrocytoma / pathology. Brain Neoplasms / blood supply. Brain Neoplasms / pathology
  • [MeSH-minor] Adolescent. Adult. Aged. Aged, 80 and over. Angiogenesis Inhibitors / therapeutic use. Antigens, CD31 / metabolism. Child. Child, Preschool. Female. Humans. Immunohistochemistry. Infant. Male. Middle Aged. Prognosis. Regional Blood Flow / physiology. Retrospective Studies. Survival

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  • (PMID = 16972887.001).
  • [ISSN] 0305-1846
  • [Journal-full-title] Neuropathology and applied neurobiology
  • [ISO-abbreviation] Neuropathol. Appl. Neurobiol.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Angiogenesis Inhibitors; 0 / Antigens, CD31
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76. Zhang JG, Kruse CA, Driggers L, Hoa N, Wisoff J, Allen JC, Zagzag D, Newcomb EW, Jadus MR: Tumor antigen precursor protein profiles of adult and pediatric brain tumors identify potential targets for immunotherapy. J Neurooncol; 2008 May;88(1):65-76
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  • [Title] Tumor antigen precursor protein profiles of adult and pediatric brain tumors identify potential targets for immunotherapy.
  • OBJECTIVES: We evaluated and compared tumor antigen precursor protein (TAPP) profiles in adult and pediatric brain tumors of 31 genes related to tumor associated antigens (TAA) for possible use in immunotherapy.
  • METHODS: Thirty-seven brain tumor specimens from 11 adult and 26 pediatric patients were analyzed by quantitative real-time PCR for the relative expression of 31 TAPP mRNAs.
  • Histological diagnoses consisted of 16 glioblastomas, 4 low grade astrocytomas, 10 juvenile pilocytic astrocytomas, and 7 ependymomas.
  • RESULTS: The adult gliomas expressed 94% (29 of 31) of the TAPP mRNAs evaluated compared with pediatric brain tumors that expressed 55-74% of the TAPP mRNAs, dependent on tumor histological subtype.
  • (1) equal expression among adult and pediatric cases, (2) greater expression in adult than pediatric cases, (3) expression restricted to adult GBM and (4) a random distribution.
  • CONCLUSIONS: The potential TAA targets identified from the TAPP profiles of 31 genes associated with adult and pediatric brain tumors may help investigators select specific target antigens for developing dendritic cell- or peptide-based vaccines or T cell-based immunotherapeutic approaches against brain tumors.

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  • (PMID = 18259692.001).
  • [ISSN] 0167-594X
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] ENG
  • [Grant] United States / NCI NIH HHS / CA / R01 CA121258; United States / NINDS NIH HHS / NS / NS 046463; United States / NCI NIH HHS / CA / CA 121258; United States / NINDS NIH HHS / NS / R21 NS057829; United States / NINDS NIH HHS / NS / NS 054093; United States / NINDS NIH HHS / NS / NS 056300; United States / NINDS NIH HHS / NS / R21 NS056300; United States / NINDS NIH HHS / NS / R21 NS046463; United States / NINDS NIH HHS / NS / NS 057829
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Antigens, Neoplasm; 0 / Biomarkers, Tumor; 0 / Protein Precursors; 0 / RNA, Messenger
  • [Other-IDs] NLM/ NIHMS572988; NLM/ PMC4005736
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77. Jentoft M, Giannini C, Cen L, Scheithauer BW, Hoesley B, Sarkaria JN, Abell-Aleff PC, Rodriguez EF, Li Y, Rodriguez FJ: Phenotypic variations in NF1-associated low grade astrocytomas: possible role for increased mTOR activation in a subset. Int J Clin Exp Pathol; 2010 Dec 12;4(1):43-57
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  • While most are classic pilocytic astrocytomas (PA), some are difficult to classify, and have been termed "low grade astrocytoma subtype indeterminate" (LGSI).
  • In the current study we performed electron microscopy, followed by gene expression, immunohistochemicai and western blot analyses in an effort to identify biological differences underlying phenotypic variation in NF1-associated low grade astrocytoma.

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  • (PMID = 21228927.001).
  • [ISSN] 1936-2625
  • [Journal-full-title] International journal of clinical and experimental pathology
  • [ISO-abbreviation] Int J Clin Exp Pathol
  • [Language] ENG
  • [Grant] United States / NCI NIH HHS / CA / P50 CA108961; United States / NCRR NIH HHS / RR / UL1 RR024150; United States / NCI NIH HHS / CA / P50CA108961
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / DNA, Neoplasm; EC 2.7.1.1 / MTOR protein, human; EC 2.7.1.1 / TOR Serine-Threonine Kinases
  • [Other-IDs] NLM/ PMC3016103
  • [Keywords] NOTNLM ; Neurofibromatosis / astrocytoma / glioma / glioneuronal / mTOR / pilocytic astrocytoma
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78. Bannykh SI, Stolt CC, Kim J, Perry A, Wegner M: Oligodendroglial-specific transcriptional factor SOX10 is ubiquitously expressed in human gliomas. J Neurooncol; 2006 Jan;76(2):115-27
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  • The two most common types of gliomas: astrocytoma and oligodendroglioma are distinguished based on their morphologic similarities to mature astrocytes and oligodendroglia.
  • We applied immunohistochemistry to analyze whether the expression of SOX10 can differentiate astrocytoma and oligodendroglioma.
  • High levels of expression were also found in pilocytic astrocytoma, consistent with recent studies suggesting that pilocytic astrocytomas have greater overlap with oligodendroglial than astrocytic tumors.
  • [MeSH-minor] Adolescent. Adult. Aged. Aged, 80 and over. Astrocytes / metabolism. Astrocytoma / metabolism. Basic Helix-Loop-Helix Transcription Factors / metabolism. Biomarkers, Tumor / metabolism. Blotting, Western. Child. Child, Preschool. Female. Humans. Immunohistochemistry. In Situ Hybridization, Fluorescence. Male. Middle Aged. Nerve Tissue Proteins / metabolism. SOXE Transcription Factors

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  • (PMID = 16205963.001).
  • [ISSN] 0167-594X
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Netherlands
  • [Chemical-registry-number] 0 / Basic Helix-Loop-Helix Transcription Factors; 0 / Biomarkers, Tumor; 0 / DNA-Binding Proteins; 0 / High Mobility Group Proteins; 0 / Nerve Tissue Proteins; 0 / OLIG1 protein, human; 0 / OLIG2 protein, human; 0 / SOX10 protein, human; 0 / SOXE Transcription Factors; 0 / Transcription Factors
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79. Massimi L, Tamburrini G, Caldarelli M, Di Rocco F, Federica N, Di Rocco C: Late closure of the stoma by spreading of a periaqueductal glioma: an unusual failure of endoscopic third ventriculostomy. Case report. J Neurosurg; 2006 Mar;104(3 Suppl):197-201
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  • The authors report on a 19-year-old patient, affected by obstructive hydrocephalus associated with a periaqueductal pilocytic astrocytoma, who underwent late secondary lesional obstruction of an ETV performed at diagnosis.
  • [MeSH-major] Astrocytoma / pathology. Brain Neoplasms / pathology. Neuroendoscopy. Third Ventricle / surgery. Ventriculostomy
  • [MeSH-minor] Adult. Female. Humans. Hydrocephalus / etiology. Magnetic Resonance Imaging. Neoplasm Invasiveness. Surgical Stomas

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  • (PMID = 16572639.001).
  • [ISSN] 0022-3085
  • [Journal-full-title] Journal of neurosurgery
  • [ISO-abbreviation] J. Neurosurg.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] United States
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80. Capper D, Weissert S, Balss J, Habel A, Meyer J, Jäger D, Ackermann U, Tessmer C, Korshunov A, Zentgraf H, Hartmann C, von Deimling A: Characterization of R132H mutation-specific IDH1 antibody binding in brain tumors. Brain Pathol; 2010 Jan;20(1):245-54
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  • The very high frequency and the distribution of this mutation among specific brain tumor entities allow the highly sensitive and specific discrimination of various tumors by immunohistochemistry, such as anaplastic astrocytoma from primary glioblastoma or diffuse astrocytoma World Health Organization (WHO) grade II from pilocytic astrocytoma or ependymoma.
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / enzymology. Brain Neoplasms / genetics. Ependymoma / genetics. Glioma / enzymology. Glioma / genetics. Isocitrate Dehydrogenase / genetics. Isocitrate Dehydrogenase / immunology
  • [MeSH-minor] Adolescent. Adult. Aged. Antigen-Antibody Reactions. Blotting, Western. Child. Child, Preschool. Cloning, Molecular. DNA, Neoplasm / biosynthesis. DNA, Neoplasm / genetics. Female. Humans. Immunohistochemistry. Infant. Male. Middle Aged. Mutation / genetics. Mutation / physiology. Protein Biosynthesis. Reverse Transcriptase Polymerase Chain Reaction. Young Adult

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  • (PMID = 19903171.001).
  • [ISSN] 1750-3639
  • [Journal-full-title] Brain pathology (Zurich, Switzerland)
  • [ISO-abbreviation] Brain Pathol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Switzerland
  • [Chemical-registry-number] 0 / DNA, Neoplasm; EC 1.1.1.41 / Isocitrate Dehydrogenase; EC 1.1.1.42. / IDH1 protein, human
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81. Shah MN, Leonard JR, Perry A: Rosette-forming glioneuronal tumors of the posterior fossa. J Neurosurg Pediatr; 2010 Jan;5(1):98-103
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • The original diagnoses included pilocytic astrocytoma, ependymoma, cerebellar dysembryoplastic neuroepithelial tumor (DNT), and oligodendroglioma.
  • [MeSH-major] Astrocytoma / diagnosis. Astrocytoma / surgery. Cerebellar Neoplasms / diagnosis. Cerebellar Neoplasms / surgery. Cerebral Ventricle Neoplasms / diagnosis. Cerebral Ventricle Neoplasms / surgery. Cranial Fossa, Posterior. Ependymoma / diagnosis. Ependymoma / surgery. Magnetic Resonance Imaging. Neuroectodermal Tumors, Primitive / diagnosis. Oligodendroglioma / diagnosis. Oligodendroglioma / surgery. Skull Base Neoplasms / diagnosis. Skull Base Neoplasms / surgery. Teratoma / diagnosis. Teratoma / surgery
  • [MeSH-minor] Adolescent. Adult. Biomarkers, Tumor / analysis. Child. Female. Humans. Middle Aged

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  • (PMID = 20043744.001).
  • [ISSN] 1933-0715
  • [Journal-full-title] Journal of neurosurgery. Pediatrics
  • [ISO-abbreviation] J Neurosurg Pediatr
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Biomarkers, Tumor
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82. Comincini S, Ferrara V, Arias A, Malovini A, Azzalin A, Ferretti L, Benericetti E, Cardarelli M, Gerosa M, Passarin MG, Turazzi S, Bellazzi R: Diagnostic value of PRND gene expression profiles in astrocytomas: relationship to tumor grades of malignancy. Oncol Rep; 2007 May;17(5):989-96
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  • It is abundant in testis and, unlike PRNP, it is expressed at low levels in the adult central nervous system (CNS).
  • In order to address clinical important issues, PRND mRNA expression was investigated in a panel of 111 astrocytoma tissue samples, histologically classified according to the World Health Organization (WHO) criteria (6 grade I pilocytic astrocytomas, 15 grade II low-grade astrocytomas, 26 grade III anaplastic astrocytomas and 64 grade IV glioblastoma multiforme).
  • Extensive differences in PRND gene expression were also found within each grade of malignancy, suggesting that PRND mRNA quantitation might be useful to distinguish astrocytoma subtypes, and important in disease stratification and in the assessment of specific treatment strategies.
  • [MeSH-major] Astrocytoma / genetics. Brain Neoplasms / genetics. Prions / biosynthesis
  • [MeSH-minor] Adolescent. Adult. Aged. Aged, 80 and over. Algorithms. Child. Cluster Analysis. Female. GPI-Linked Proteins. Gene Expression Profiling. Glioblastoma / genetics. Glioblastoma / metabolism. Glioblastoma / pathology. Humans. Male. Middle Aged. Prognosis

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  • (PMID = 17390034.001).
  • [ISSN] 1021-335X
  • [Journal-full-title] Oncology reports
  • [ISO-abbreviation] Oncol. Rep.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Greece
  • [Chemical-registry-number] 0 / GPI-Linked Proteins; 0 / PRND protein, human; 0 / Prions
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83. Kawaguchi T, Kumabe T, Shimizu H, Watanabe M, Tominaga T: 201Tl-SPECT and 1H-MRS study of benign lateral ventricle tumors: differential diagnosis of subependymoma. Neurosurg Rev; 2005 Apr;28(2):96-103
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  • Our study includes nine cases of benign lateral ventricle tumors including two cases of central neurocytoma, two of subependymal giant cell astrocytoma, two of pilocytic astrocytoma and three of subependymoma treated surgically between 1996 and 2003.
  • All three types of tumor demonstrated heterogeneous enhancement on MR imaging with gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) and increased choline (Cho) peak and decreased N-acetyl aspartate (NAA) and creatine (Cre) peaks on (1)H-MRS. (201)Tl-SPECT showed high uptake of (201)Tl without wash out in all cases of central neurocytoma, subependymal giant cell astrocytoma and pilocytic astrocytoma, but no uptake in cases of subependymoma.
  • [MeSH-major] Astrocytoma / diagnosis. Cerebral Ventricle Neoplasms / diagnosis. Glioma, Subependymal / diagnosis. Lateral Ventricles. Neurocytoma / diagnosis
  • [MeSH-minor] Adolescent. Adult. Aged. Diagnosis, Differential. Female. Humans. Magnetic Resonance Spectroscopy. Male. Middle Aged. Retrospective Studies. Thallium Radioisotopes. Tomography, Emission-Computed, Single-Photon

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  • (PMID = 15580370.001).
  • [ISSN] 0344-5607
  • [Journal-full-title] Neurosurgical review
  • [ISO-abbreviation] Neurosurg Rev
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Germany
  • [Chemical-registry-number] 0 / Thallium Radioisotopes
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84. Anan M, Inoue R, Ishii K, Abe T, Fujiki M, Kobayashi H, Goya T, Nakazato Y: A rosette-forming glioneuronal tumor of the spinal cord: the first case of a rosette-forming glioneuronal tumor originating from the spinal cord. Hum Pathol; 2009 Jun;40(6):898-901

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  • The astrocytic component showed characteristic features of a pilocytic astrocytoma, as is often the case in the fourth ventricle examples.
  • [MeSH-minor] Adult. Astrocytoma / pathology. Female. Humans. Rosette Formation

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  • [CommentIn] Hum Pathol. 2009 Oct;40(10):1510; author reply 1510 [19616823.001]
  • (PMID = 19269010.001).
  • [ISSN] 1532-8392
  • [Journal-full-title] Human pathology
  • [ISO-abbreviation] Hum. Pathol.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] United States
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85. Maryniak A, Roszkowski M: [Cognitive and affective disturbances in children after surgical treatment of cerebellar tumors]. Neurol Neurochir Pol; 2005 May-Jun;39(3):202-6
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  • MATERIAL AND METHODS: Cognitive and emotional functions were studied in 66 children who underwent surgery for cerebellar pilocytic astrocytoma at the Department of Neurosurgery of the Children Memorial Health Institute.
  • CONCLUSIONS: The present study confirms the psychological deficits following cerebellar lesion in children, similar to the cerebellar cognitive affective syndrome reported in adult patients.
  • [MeSH-major] Astrocytoma / surgery. Cerebellar Neoplasms / surgery. Cognition Disorders / etiology. Mood Disorders / etiology. Neurosurgical Procedures / adverse effects. Speech Disorders / etiology
  • [MeSH-minor] Adaptation, Psychological. Adolescent. Adult. Cerebellum / physiopathology. Cerebellum / surgery. Child. Child, Preschool. Female. Humans. Male. Memory Disorders / etiology. Neuropsychological Tests. Parent-Child Relations. Poland. Retrospective Studies

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  • (PMID = 15981157.001).
  • [ISSN] 0028-3843
  • [Journal-full-title] Neurologia i neurochirurgia polska
  • [ISO-abbreviation] Neurol. Neurochir. Pol.
  • [Language] pol
  • [Publication-type] English Abstract; Journal Article
  • [Publication-country] Poland
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86. Yan B, Omar FM, Das K, Ng WH, Lim C, Shiuan K, Yap CT, Salto-Tellez M: Characterization of Numb expression in astrocytomas. Neuropathology; 2008 Oct;28(5):479-84
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • Given its role in maintaining neural progenitor pools in animal models and its reported role as a tumor suppressor, Numb could potentially contribute to astrocytoma oncogenesis.
  • We characterized Numb expression in both human astrocytoma tissue samples and glioblastoma cell lines.
  • We found that Numb is expressed in all grades of astrocytomas, being predominantly cytoplasmic in higher-grade astrocytomas but nuclear in pilocytic astrocytomas.
  • Numb expression in astrocytomas recapitulates that of progenitor cells during neurodevelopment, and suggests a role for Numb in astrocytoma oncogenesis.
  • [MeSH-major] Astrocytoma / metabolism. Brain Neoplasms / metabolism. Membrane Proteins / biosynthesis. Nerve Tissue Proteins / biosynthesis
  • [MeSH-minor] Adult. Aged. Cell Line, Tumor. Child. Child, Preschool. Female. Glial Fibrillary Acidic Protein / biosynthesis. Humans. Immunohistochemistry. Infant. Male. Middle Aged. Neuroglia / metabolism. Neurons / metabolism

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  • (PMID = 18384513.001).
  • [ISSN] 1440-1789
  • [Journal-full-title] Neuropathology : official journal of the Japanese Society of Neuropathology
  • [ISO-abbreviation] Neuropathology
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Australia
  • [Chemical-registry-number] 0 / Glial Fibrillary Acidic Protein; 0 / Membrane Proteins; 0 / Nerve Tissue Proteins; 0 / Numb protein, human
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87. Souweidane MM, Morgenstern PF, Christos PJ, Edgar MA, Khakoo Y, Rutka JT, Dunkel IJ: Intraoperative arachnoid and cerebrospinal fluid sampling in children with posterior fossa brain tumors. Neurosurgery; 2009 Jul;65(1):72-8; discussion 78
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  • Arachnoid infiltration and CSF cytology were found in 20.0% and 44.8%, respectively, for medulloblastoma/pineoblastoma (primitive neuroectodermal tumor), 6.9% and 3.6% for pilocytic astrocytoma, and 0.0% and 33.3% for ependymoma.
  • [MeSH-major] Arachnoid / surgery. Astrocytoma. Infratentorial Neoplasms
  • [MeSH-minor] Adolescent. Adult. Aged. Child. Child, Preschool. Cohort Studies. Female. Humans. Infant. Magnetic Resonance Imaging. Male. Middle Aged. Retrospective Studies. Young Adult

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  • (PMID = 19574827.001).
  • [ISSN] 1524-4040
  • [Journal-full-title] Neurosurgery
  • [ISO-abbreviation] Neurosurgery
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
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88. Scheithauer BW, Silva AI, Ketterling RP, Pula JH, Lininger JF, Krinock MJ: Rosette-forming glioneuronal tumor: report of a chiasmal-optic nerve example in neurofibromatosis type 1: special pathology report. Neurosurgery; 2009 Apr;64(4):E771-2; discussion E772
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • OBJECTIVE: Rosette-forming glioneuronal tumor is a rare, rather recently described tumor featuring a highly distinctive, biphasic histological pattern, including a cytologically uniform neuronal component of Homer-Wright type pseudorosettes and an accompanying astrocytic element resembling pilocytic astrocytoma.
  • [MeSH-minor] Astrocytoma / pathology. Humans. Magnetic Resonance Imaging / methods. Male. Young Adult

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  • (PMID = 19349806.001).
  • [ISSN] 1524-4040
  • [Journal-full-title] Neurosurgery
  • [ISO-abbreviation] Neurosurgery
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] United States
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89. Marie SK, Okamoto OK, Uno M, Hasegawa AP, Oba-Shinjo SM, Cohen T, Camargo AA, Kosoy A, Carlotti CG Jr, Toledo S, Moreira-Filho CA, Zago MA, Simpson AJ, Caballero OL: Maternal embryonic leucine zipper kinase transcript abundance correlates with malignancy grade in human astrocytomas. Int J Cancer; 2008 Feb 15;122(4):807-15
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  • We have performed cDNA microarray analyses to identify gene expression differences between highly invasive glioblastoma multiforme (GBM) and typically benign pilocytic astrocytomas (PA).
  • In the examination of more than 100 tumors of the central nervous system, we found progressively higher expression of MELK with astrocytoma grade and a noteworthy uniformity of high level expression in GBM.
  • We found neither gene promoter hypomethylation nor amplification to be a factor in MELK expression, but were able to demonstrate that MELK knockdown in malignant astrocytoma cell lines caused a reduction in proliferation and anchorage-independent growth in in vitro assays.
  • Among them, MELK correlated with malignancy grade in astrocytomas and represents a therapeutic target for the management of the most frequent brain tumors in adult and children.
  • [MeSH-major] Astrocytoma / genetics. Gene Expression Profiling. Gene Expression Regulation, Neoplastic. Glioblastoma / genetics. Protein-Serine-Threonine Kinases / genetics
  • [MeSH-minor] Adult. Apoptosis. Brain / metabolism. Brain Neoplasms / genetics. Brain Neoplasms / pathology. Cell Proliferation. Child. DNA Methylation. Gene Dosage. Humans. Oligonucleotide Array Sequence Analysis. Promoter Regions, Genetic. RNA, Small Interfering / pharmacology. Reverse Transcriptase Polymerase Chain Reaction. Tumor Cells, Cultured

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  • [Copyright] (c) 2007 Wiley-Liss, Inc.
  • (PMID = 17960622.001).
  • [ISSN] 1097-0215
  • [Journal-full-title] International journal of cancer
  • [ISO-abbreviation] Int. J. Cancer
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / RNA, Small Interfering; EC 2.7.1.- / MELK protein, human; EC 2.7.11.1 / Protein-Serine-Threonine Kinases
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90. Nguyen C, Borruat FX: Bilateral peripapillary subretinal neovessel membrane associated with chronic papilledema: report of two cases. Klin Monbl Augenheilkd; 2005 Mar;222(3):275-8
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • Cerebral imaging revealed a pilocytic astrocytoma and hydrocephaly.
  • [MeSH-major] Astrocytoma / complications. Brain Neoplasms / complications. Hydrocephalus / complications. Intracranial Hypertension / complications. Optic Disk / blood supply. Papilledema / complications. Retinal Neovascularization / complications. Vision Disorders / etiology
  • [MeSH-minor] Adult. Child. Chronic Disease. Diagnosis, Differential. Fluorescein Angiography. Follow-Up Studies. Humans. Male. Vision, Low / diagnosis. Vision, Low / etiology. Visual Acuity / physiology


91. Henderson MA, Fakiris AJ, Timmerman RD, Worth RM, Lo SS, Witt TC: Gamma knife stereotactic radiosurgery for low-grade astrocytomas. Stereotact Funct Neurosurg; 2009;87(3):161-7
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  • Patients with low-grade astrocytoma (LGA; 8 pilocytic astrocytomas, 2 subependymal giant cell astrocytomas, 2 fibrillary astrocytomas) were selected for treatment with gamma knife stereotactic radiosurgery (GKSRS) based on having a demarcated appearance on CT or MRI and the possibility of dose sparing of adjacent eloquent structures.
  • [MeSH-major] Astrocytoma / surgery. Brain Neoplasms / surgery. Radiosurgery / methods
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Follow-Up Studies. Humans. Male. Middle Aged. Retrospective Studies. Survival Rate / trends. Young Adult

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  • [Copyright] 2009 S. Karger AG, Basel.
  • (PMID = 19321969.001).
  • [ISSN] 1423-0372
  • [Journal-full-title] Stereotactic and functional neurosurgery
  • [ISO-abbreviation] Stereotact Funct Neurosurg
  • [Language] eng
  • [Publication-type] Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] Switzerland
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92. Franz DN, Leonard J, Tudor C, Chuck G, Care M, Sethuraman G, Dinopoulos A, Thomas G, Crone KR: Rapamycin causes regression of astrocytomas in tuberous sclerosis complex. Ann Neurol; 2006 Mar;59(3):490-8
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  • METHODS: Five subjects with clinically definite TSC and either subependymal giant cell astrocytomas (n = 4) or a pilocytic astrocytoma (n = 1) were treated with oral rapamycin at standard immunosuppressive doses (serum levels 5-15 ng/ml) from 2.5 to 20 months.
  • [MeSH-major] Astrocytoma / drug therapy. Astrocytoma / etiology. Brain Neoplasms / drug therapy. Immunosuppressive Agents. Regression (Psychology). Sirolimus / therapeutic use. Tuberous Sclerosis / complications
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Dose-Response Relationship, Drug. Female. Humans. Magnetic Resonance Imaging / methods. Male. Models, Biological


93. Garcés-Ambrossi GL, McGirt MJ, Mehta VA, Sciubba DM, Witham TF, Bydon A, Wolinksy JP, Jallo GI, Gokaslan ZL: Factors associated with progression-free survival and long-term neurological outcome after resection of intramedullary spinal cord tumors: analysis of 101 consecutive cases. J Neurosurg Spine; 2009 Nov;11(5):591-9
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • Pathological type included ependymoma in 51 cases, hemangioblastoma in 15, pilocytic astrocytoma in 16, WHO Grade II astrocytoma in 10, and malignant astrocytoma in 9.
  • A GTR resulted in improved PFS for hemangioblastoma (HR 0.004, p = 0.04) and ependymoma (HR 0.2, p = 0.02), but not astrocytoma.
  • A GTR should be attempted for ependymoma and hemangioblastoma, but it may not affect PFS for astrocytoma.
  • [MeSH-minor] Adolescent. Adult. Astrocytoma / mortality. Astrocytoma / pathology. Astrocytoma / surgery. Disease Progression. Disease-Free Survival. Ependymoma / mortality. Ependymoma / pathology. Ependymoma / surgery. Female. Follow-Up Studies. Humans. Kaplan-Meier Estimate. Magnetic Resonance Imaging. Male. Middle Aged. Predictive Value of Tests. Prognosis. Recovery of Function. Retrospective Studies. Risk Factors. Therapeutics. Young Adult

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  • [CommentIn] J Neurosurg Spine. 2009 Nov;11(5):588-9; discussion 590 [19929362.001]
  • (PMID = 19929363.001).
  • [ISSN] 1547-5646
  • [Journal-full-title] Journal of neurosurgery. Spine
  • [ISO-abbreviation] J Neurosurg Spine
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] United States
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94. Hamlat A, Morandi X, Riffaud L, Carsin-Nicol B, Haegelen C, Helal H, Brassier G: Transtemporal-transchoroidal approach and its transamygdala extension to the posterior chiasmatic cistern and diencephalo-mesencephalic lesions. Acta Neurochir (Wien); 2008 Apr;150(4):317-27; discussion 327-8
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  • The procedure is described for five surgically treated patients with such lesions that includes three retrochiasmatic craniopharyngiomas, one hypothalamic hamartoma, and one pilocytic astrocytoma in the left crus cerebri.
  • [MeSH-major] Amygdala / surgery. Astrocytoma / surgery. Brain Neoplasms / surgery. Choroid Plexus / surgery. Craniopharyngioma / surgery. Hamartoma / surgery. Hypothalamic Neoplasms / surgery. Microsurgery / methods. Pituitary Neoplasms / surgery. Temporal Lobe / surgery
  • [MeSH-minor] Adult. Aged. Child. Child, Preschool. Diencephalon / pathology. Diencephalon / surgery. Female. Humans. Hydrocephalus / surgery. Magnetic Resonance Imaging. Male. Mesencephalon / pathology. Mesencephalon / surgery. Middle Aged. Optic Chiasm / pathology. Optic Chiasm / surgery. Tomography, X-Ray Computed. Ventriculoperitoneal Shunt

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  • (PMID = 18311527.001).
  • [ISSN] 0942-0940
  • [Journal-full-title] Acta neurochirurgica
  • [ISO-abbreviation] Acta Neurochir (Wien)
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Austria
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95. Kidd EA, Mansur DB, Leonard JR, Michalski JM, Simpson JR, Perry A: The efficacy of radiation therapy in the management of grade I astrocytomas. J Neurooncol; 2006 Jan;76(1):55-8
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • Twenty patients with grade I pilocytic astrocytoma (n=19) or subependymal giant cell astrocytoma (n=1) were treated with radiation therapy with curative intent.
  • [MeSH-major] Astrocytoma / radiotherapy. Brain Neoplasms / radiotherapy. Neoplasm Recurrence, Local
  • [MeSH-minor] Adolescent. Adult. Child. Child, Preschool. Female. Follow-Up Studies. Humans. Male. Prognosis. Retrospective Studies. Survival Analysis. Treatment Outcome

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  • (PMID = 16132503.001).
  • [ISSN] 0167-594X
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Netherlands
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96. Kaptigau WM, Ke L: Space-occupying lesions in Papua New Guinea--the CT era. P N G Med J; 2007 Mar-Jun;50(1-2):33-43
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  • There were 6 astrocytomas and 3 meningiomas followed by secondaries, pilocytic astrocytoma and medulloblastoma with 2 cases each.
  • [MeSH-minor] Adolescent. Adult. Age Distribution. Astrocytoma / radiography. Child. Child, Preschool. Female. Humans. Infant. Male. Meningioma / radiography. Middle Aged. Papua New Guinea. Sex Distribution. Tomography, X-Ray Computed. Young Adult

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  • (PMID = 19354010.001).
  • [ISSN] 0031-1480
  • [Journal-full-title] Papua and New Guinea medical journal
  • [ISO-abbreviation] P N G Med J
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] Papua New Guinea
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97. Salgado JV, Costa-Silva M, Malloy-Diniz LF, Siqueira JM, Teixeira AL: Prefrontal cognitive dysfunction following brainstem lesion. Clin Neurol Neurosurg; 2007 May;109(4):379-82
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  • A 29-year-old man developed several cognitive and behavioral symptoms after neurosurgery for resection of a pilocytic astrocytoma in the pontine-mesencephalic area.
  • [MeSH-major] Astrocytoma / surgery. Brain Stem Neoplasms / surgery. Cognition Disorders / physiopathology. Postoperative Complications / physiopathology. Prefrontal Cortex / physiopathology
  • [MeSH-minor] Adolescent. Adult. Attention / drug effects. Attention / physiology. Central Nervous System Stimulants / therapeutic use. Educational Status. Follow-Up Studies. Humans. Impulsive Behavior / diagnosis. Impulsive Behavior / drug therapy. Impulsive Behavior / physiopathology. Inhibition (Psychology). Interpersonal Relations. Learning Disorders / diagnosis. Learning Disorders / drug therapy. Learning Disorders / physiopathology. Male. Methylphenidate / therapeutic use. Neuropsychological Tests. Problem Solving / drug effects. Problem Solving / physiology

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  • (PMID = 17275997.001).
  • [ISSN] 0303-8467
  • [Journal-full-title] Clinical neurology and neurosurgery
  • [ISO-abbreviation] Clin Neurol Neurosurg
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article
  • [Publication-country] Netherlands
  • [Chemical-registry-number] 0 / Central Nervous System Stimulants; 207ZZ9QZ49 / Methylphenidate
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98. Hargrave D: Paediatric high and low grade glioma: the impact of tumour biology on current and future therapy. Br J Neurosurg; 2009 Aug;23(4):351-63
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  • Pilocytic astrocytoma, the most common childhood low grade brain tumour, has recently been shown to harbour an activated BRAF/MAPK/ERK pathway in the majority of cases; this represents an attractive target for new agents.
  • The molecular biology of adult malignant glioma is now well described and targeted therapies against VEGFR are already playing a role in the management of glioblastoma.
  • [MeSH-minor] Adolescent. Adult. Astrocytoma / genetics. Astrocytoma / pathology. Astrocytoma / therapy. Child. Child, Preschool. Combined Modality Therapy. Drug Delivery Systems. Genetic Predisposition to Disease. Genome-Wide Association Study. Hamartoma Syndrome, Multiple / genetics. Humans. Infant. Neoplasm Staging. Neurofibromatosis 1 / genetics. Prognosis. Tuberous Sclerosis / genetics


99. Yamashita Y, Kumabe T, Higano S, Watanabe M, Tominaga T: Minimum apparent diffusion coefficient is significantly correlated with cellularity in medulloblastomas. Neurol Res; 2009 Nov;31(9):940-6
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  • METHODS: Pre-operative diffusion-weighted MR images were retrospectively reviewed in 26 patients with posterior fossa neoplasms: 11 medulloblastomas, one atypical teratoid/rhabdoid tumor (AT/RT), four glioblastomas, four ependymomas, three pilocytic astrocytomas and three hemangioblastomas.
  • RESULTS: The mean minADC value of the medulloblastoma was significantly lower than those of ependymoma, pilocytic astrocytoma and hemangioblastoma without overlap in the range of minADC values.
  • [MeSH-minor] Adolescent. Adult. Aged. Astrocytoma / metabolism. Astrocytoma / pathology. Astrocytoma / physiopathology. Body Water / physiology. Cell Count. Child. Child, Preschool. Diagnosis, Differential. Diffusion. Ependymoma / metabolism. Ependymoma / pathology. Ependymoma / physiopathology. Extracellular Space / metabolism. Female. Hemangioblastoma / metabolism. Hemangioblastoma / pathology. Hemangioblastoma / physiopathology. Humans. Infant. Male. Middle Aged. Retrospective Studies. Young Adult

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  • (PMID = 19138469.001).
  • [ISSN] 1743-1328
  • [Journal-full-title] Neurological research
  • [ISO-abbreviation] Neurol. Res.
  • [Language] eng
  • [Publication-type] Journal Article
  • [Publication-country] England
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100. Rodriguez FJ, Perry A, Gutmann DH, O'Neill BP, Leonard J, Bryant S, Giannini C: Gliomas in neurofibromatosis type 1: a clinicopathologic study of 100 patients. J Neuropathol Exp Neurol; 2008 Mar;67(3):240-9
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  • Most tumors were typical pilocytic astrocytoma (PA) (49%) or diffusely infiltrating astrocytoma (DA) (27%) that included World Health Organization Grades II (5%), III (15%), and IV (7%); others were designated as low-grade astrocytoma, subtype indeterminate (LGSI; 17%).
  • The tumors in 24 cases arose in the optic pathways and included PA (n = 14), LGSI (n = 4), DA (n = 4), pilomyxoid astrocytoma (n = 1), and ganglioglioma (n = 1).

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  • (PMID = 18344915.001).
  • [ISSN] 0022-3069
  • [Journal-full-title] Journal of neuropathology and experimental neurology
  • [ISO-abbreviation] J. Neuropathol. Exp. Neurol.
  • [Language] ENG
  • [Grant] United States / NINDS NIH HHS / NS / T32 NS007494; United States / NINDS NIH HHS / NS / T32 NS07494-04
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Biomarkers, Tumor
  • [Other-IDs] NLM/ NIHMS396162; NLM/ PMC3417064
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