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[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Expression of TP73L is a helpful diagnostic marker of primary mediastinal large B-cell lymphomas.

Primary mediastinal large B-cell lymphoma is a well-defined lymphoma entity whose molecular pathogenesis is incompletely understood and also lacking well-established diagnostic markers.

Recently, the presence of overlapping features between classical Hodgkin's lymphoma and primary mediastinal large B-cell lymphoma was highlighted by gene expression profiling as well as morphological studies.

We investigated the expression of TP73L (commonly known as p63) isoforms in primary mediastinal large B-cell lymphoma at both protein and mRNA level, and demonstrated the exclusive presence of transactivating (TA) isoforms in all cases.

We also demonstrated that TP73L is expressed in a subset of germinal center B-cells, as well as in some diffuse large B-cell lymphomas, but it is never present in classical Hodgkin lymphoma.

Nodular lymphocyte predominant Hodgkin's lymphoma also showed TP73L positivity by immunohistochemistry.

Isoform analysis by real-time PCR showed that TA-TP73Lalpha is the most represented in primary mediastinal large B-cell lymphoma, but TA-TP73Lgamma is the most differentially expressed in comparison to both germinal center B-cells and diffuse large B-cell lymphomas.

TP73L expression proved a useful diagnostic marker of primary mediastinal large B-cell lymphoma, and gave new insights in to the molecular pathways playing a role in this lymphoma.

[MeSH-major] Hodgkin Disease / diagnosis. Lymphoma, B-Cell / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis. Phosphoproteins / biosynthesis. Trans-Activators / biosynthesis

[MeSH-minor] Biomarkers, Tumor / analysis. DNA-Binding Proteins. Diagnosis, Differential. Gene Expression. Gene Expression Profiling. Genes, Tumor Suppressor. Humans. Immunohistochemistry. Protein Isoforms / biosynthesis. RNA, Messenger / analysis. Reverse Transcriptase Polymerase Chain Reaction. Transcription Factors. Tumor Suppressor Proteins

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[Copyright] Modern Pathology (2005) 18, 1448-1453. doi:10.1038/modpathol.3800440; published online 13 May 2005.

(PMID = 15920542.001).

[ISSN] 0893-3952

[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] Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / DNA-Binding Proteins; 0 / Phosphoproteins; 0 / Protein Isoforms; 0 / RNA, Messenger; 0 / TP63 protein, human; 0 / Trans-Activators; 0 / Transcription Factors; 0 / Tumor Suppressor Proteins

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal large B-cell lymphoma in HIV: report of two cases.

Primary mediastinal large B cell lymphoma (PMLBCL) is a subtype of diffuse large B cell lymphoma arising in the mediastinum with distinctive clinical and morphological features.

Though diffuse large B cell lymphoma is one of the most common non-Hodgkin lymphoma associated with AIDS, there are no data available regarding the association of HIV and PMLBCL.

In both cases, PMLBCL presented in a setting of low CD4 T-cell count as rapidly enlarging mediastinal mass.

The morphologic and immunophenotypic findings are characteristic of PMLBCL.

One of the two patients, a 25-year-old woman who had localized disease and evidence of Epstein-Barr virus in lymphoma cells, did not respond to chemotherapy and died of disease progression 5 months after diagnosis.

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(PMID = 19669223.001).

[ISSN] 1868-9256

[Journal-full-title] Journal of hematopathology

[ISO-abbreviation] J Hematop

[Language] eng

[Publication-type] Journal Article

[Publication-country] Germany

[Other-IDs] NLM/ PMC2713493

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] No evidence for the JAK2 (V617F) or JAK2 exon 12 mutations in primary mediastinal large B-cell lymphoma.

Recently, our work comparing gene expression signatures of primary mediastinal large B-cell lymphomas (PMLBCL) versus nodal diffuse large B-cell lymphomas revealed a relative increase in JAK2 transcripts in the former, suggesting a role for increased JAK2 signaling in a subset of these tumors.

Analysis using cell lines derived from PMLBCLs (n = 1) and from the molecularly similar classic Hodgkin lymphoma (n = 4) also failed to reveal involvement of a mutant JAK2 allele.

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(PMID = 19704259.001).

[ISSN] 1533-4066

[Journal-full-title] Diagnostic molecular pathology : the American journal of surgical pathology, part B

[ISO-abbreviation] Diagn. Mol. Pathol.

[Language] ENG

[Grant] United States / NCI NIH HHS / CA / CA092625-08; United States / NCI NIH HHS / CA / P01 CA092625; United States / NCI NIH HHS / CA / P01 CA092625-08; United States / NCI NIH HHS / CA / P01CA092625-01

[Publication-type] Journal Article; Research Support, N.I.H., Extramural

[Publication-country] United States

[Chemical-registry-number] EC 2.7.10.2 / JAK2 protein, human; EC 2.7.10.2 / Janus Kinase 2

[Other-IDs] NLM/ NIHMS80972; NLM/ PMC2732663

   

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[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] The value of CD23 expression as an additional marker in distinguishing mediastinal (thymic) large B-cell lymphoma from Hodgkin lymphoma.

Mediastinal diffuse large B-cell lymphoma (Med-DLBCL) is a subtype of DLBCL that has morphologic and clinical similarities and phenotypic overlaps with classical Hodgkin lymphoma (CHL) involving the mediastinum.

CD23 is a marker that has been previously reported in Med-DLBCI and is proposed in the differential diagnosis of M-DLBCL and CHL.

In conclusion CD23 is a useful marker in distinguishing Med-DLBCL and CHL in mediastinal biopsies and may be helpful as an adjunct to histomorphology and other markers in the diagnosis and appropriate clinical management of these lesions.

[MeSH-major] Hodgkin Disease / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis. Receptors, IgE / metabolism. Thymus Neoplasms / diagnosis

[MeSH-minor] Adolescent. Adult. Aged. Aged, 80 and over. Biomarkers, Tumor / metabolism. Child. Diagnosis, Differential. Female. Humans. Male. Middle Aged. Predictive Value of Tests. Reed-Sternberg Cells / pathology. Retrospective Studies. Young Adult

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(PMID = 19223373.001).

[ISSN] 1940-2465

[Journal-full-title] International journal of surgical pathology

[ISO-abbreviation] Int. J. Surg. Pathol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / Receptors, IgE

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Integrative analysis reveals selective 9p24.1 amplification, increased PD-1 ligand expression, and further induction via JAK2 in nodular sclerosing Hodgkin lymphoma and primary mediastinal large B-cell lymphoma.

Classical Hodgkin lymphoma (cHL) and mediastinal large B-cell lymphoma (MLBCL) are lymphoid malignancies with certain shared clinical, histologic, and molecular features.

Primary cHLs and MLBCLs include variable numbers of malignant cells within an inflammatory infiltrate, suggesting that these tumors escape immune surveillance.

Herein, we integrate high-resolution copy number data with transcriptional profiles and identify the immunoregulatory genes, PD-L1 and PD-L2, as key targets at the 9p24.1 amplification peak in HL and MLBCL cell lines.

We extend these findings to laser-capture microdissected primary Hodgkin Reed-Sternberg cells and primary MLBCLs and find that programmed cell death-1 (PD-1) ligand/9p24.1 amplification is restricted to nodular sclerosing HL, the cHL subtype most closely related to MLBCL.

Using quantitative immunohistochemical methods, we document the association between 9p24.1 copy number and PD-1 ligand expression in primary tumors.

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(PMID = 20628145.001).

[ISSN] 1528-0020

[Journal-full-title] Blood

[ISO-abbreviation] Blood

[Language] ENG

[Grant] United States / NCI NIH HHS / CA / P01 CA092625

[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 / Antigens, CD; 0 / Antigens, CD274; 0 / CD274 protein, human; 0 / Intercellular Signaling Peptides and Proteins; 0 / PDCD1LG2 protein, human; 0 / Programmed Cell Death 1 Ligand 2 Protein; EC 2.7.10.2 / Janus Kinase 2

[Other-IDs] NLM/ PMC2995356

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] NFkappaB activity, function, and target-gene signatures in primary mediastinal large B-cell lymphoma and diffuse large B-cell lymphoma subtypes.

Primary mediastinal large B-cell lymphoma (MLBCL) shares important clinical and molecular features with classic Hodgkin lymphoma, including nuclear localization of the nuclear factor kappaB (NFkappaB) subunit c-REL (reticuloendotheliosis viral oncogene homolog) in a pilot series.

Herein, we analyzed c-REL subcellular localization in additional primary MLBCLs and characterized NFkappaB activity and function in a MLBCL cell line.

The new primary MLBCLs had prominent c-REL nuclear staining, and the MLBCL cell line exhibited high levels of NFkappaB binding activity.

MLBCL cells expressing a superrepressor form of inhibitor of kappa B alpha signaling (IkappaB alpha) had a markedly higher rate of apoptosis, implicating constitutive NFkappaB activity in MLBCL cell survival.

The transcriptional profiles of newly diagnosed primary MLBCLs and diffuse large B-cell lymphomas (DLBCLs) were then used to characterize the NFkappaB target gene signatures of MLBCL and specific DLBCL subtypes.

MLBCLs expressed increased levels of NFkappaB targets that promote cell survival and favor antiapoptotic tumor necrosis factor alpha (TNFalpha) signaling.

In contrast, activated B cell (ABC)-like DLBCLs had a more restricted, potentially developmentally regulated, NFkappaB target gene signature.

Of interest, the newly characterized host response DLBCL subtype had a robust NFkappaB target gene signature that partially overlapped that of primary MLBCL.

In this large series of primary MLBCLs and DLBCLs, NFkappaB activation was not associated with amplification of the cREL locus, suggesting alternative pathogenetic mechanisms.

[MeSH-major] Gene Expression Regulation, Neoplastic. Lymphoma, B-Cell / pathology. Lymphoma, Large B-Cell, Diffuse / pathology. Mediastinal Neoplasms / pathology. NF-kappa B / physiology. Proto-Oncogene Proteins c-rel / genetics

[MeSH-minor] Apoptosis. Cell Line, Tumor. Gene Expression Profiling. Humans

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(PMID = 15870177.001).

[ISSN] 0006-4971

[Journal-full-title] Blood

[ISO-abbreviation] Blood

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / NF-kappa B; 0 / Proto-Oncogene Proteins c-rel

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Identification of a chemokine receptor profile characteristic for mediastinal large B-cell lymphoma.

Mediastinal large B-cell lymphomas (MLBCLs) are considered as a subtype of diffuse large B-cell lymphoma; however, they exhibit completely different patterns of dissemination.

Since they share a number of surface markers with thymic B cells, a close relationship was assumed.

MLBCLs arise extranodally within the anterior mediastinum and have a low propensity to metastasize.

To address the preferential positioning of MLBCL, we focused on homeostatic chemokines involved in B-cell compartmental homing in secondary lymphoid organs, which are also capable of shaping lymphoid niches in ectopic sites.

Flow cytometry was used to identify the chemokine receptor profile on an MLBCL-derived cell line, Karpas1106 and on thymic B cells.

Using immunohistochemistry, we obtained an unexpectedly low-expression frequency for the chemokine receptors CXCR5 and CCR7 in primary lesions.

Although the mature B-cell marker CCR6 was absent in most cases, the lineage aberrant marker CCR9 emerged in the majority of MLBCL cases.

MLBCLs exhibit a diagnostic chemokine receptor profile that is instrumental in the discrimination from diffuse large B-cell lymphoma not otherwise specified and classical Hodgkin lymphoma.

Furthermore, we suggest that low-abundance expression of CCR7 and CXCR5 may hinder lymphoma cells from nodal dissemination.

[MeSH-major] Lymphoma, Large B-Cell, Diffuse / metabolism. Mediastinal Neoplasms / metabolism. Receptors, CCR7 / metabolism. Receptors, CXCR5 / metabolism

[MeSH-minor] Adolescent. B-Lymphocytes / metabolism. Cell Movement. Cells, Cultured. Chemotaxis. Child. Child, Preschool. Electrophoretic Mobility Shift Assay. Flow Cytometry. Humans. Immunoenzyme Techniques. Infant. NF-kappa B / metabolism. Thymus Gland / cytology. Thymus Gland / metabolism. Young Adult

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(PMID = 19536742.001).

[ISSN] 1097-0215

[Journal-full-title] International journal of cancer

[ISO-abbreviation] Int. J. Cancer

[Language] eng

[Publication-type] Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / CCR7 protein, human; 0 / CXCR5 protein, human; 0 / NF-kappa B; 0 / Receptors, CCR7; 0 / Receptors, CXCR5

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Increased risk of venous thromboembolism in patients with primary mediastinal large B-cell lymphoma.

BACKGROUND: Primary mediastinal large B-cell lymphoma (PMBCL) is a rare subtype of diffuse large B-cell lymphoma, arising in the mediastinum.

Compression of large mediastinal vessels is common in patients with PMBCL, predisposing these patients to venous thrombosis.

Ten patients had a thrombosis at the moment of diagnosis PMBCL, while in five thrombosis occurred during the course of the disease.

Also, patients in the VTE subgroup had significantly larger diameter of mediastinal tumor mass (P=0.01) and the incidence of syndrome venae cava superior (P=0.009).

Use of antithrombotic prophylaxis may be considered together with chemotherapy, especially in those with bulky mediastinal tumor mass.

[MeSH-major] Lymphoma, B-Cell / blood. Venous Thromboembolism / pathology

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[Copyright] Copyright © 2010. Published by Elsevier Ltd.

(PMID = 21126629.001).

[ISSN] 1879-2472

[Journal-full-title] Thrombosis research

[ISO-abbreviation] Thromb. Res.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Aberrant somatic hypermutation and expression of activation-induced cytidine deaminase mRNA in mediastinal large B-cell lymphoma.

To determine the possible role of aberrant somatic hypermutation (ASHM) and activation-induced cytidine deaminase (AID) expression in the pathogenesis of mediastinal large B-cell lymphoma (MBL), the mutational status of genes affected by ASHM, including c-MYC, PAX-5 and RhoH, was analysed, and the expression level of AID mRNA in tumour specimens from six patients with MBL was determined.

[MeSH-major] Cytidine Deaminase / genetics. Lymphoma, Large B-Cell, Diffuse / genetics. Mediastinal Neoplasms / genetics. Somatic Hypermutation, Immunoglobulin

[MeSH-minor] B-Cell-Specific Activator Protein. DNA Mutational Analysis. DNA, Neoplasm / genetics. DNA-Binding Proteins / genetics. Gene Expression. Genes, myc / genetics. Humans. Neoplasm Proteins / genetics. RNA, Messenger / genetics. RNA, Neoplasm / genetics. Transcription Factors / genetics. rho GTP-Binding Proteins / genetics

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(PMID = 15842661.001).

[ISSN] 0007-1048

[Journal-full-title] British journal of haematology

[ISO-abbreviation] Br. J. Haematol.

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] England

[Chemical-registry-number] 0 / B-Cell-Specific Activator Protein; 0 / DNA, Neoplasm; 0 / DNA-Binding Proteins; 0 / Neoplasm Proteins; 0 / PAX5 protein, human; 0 / RNA, Messenger; 0 / RNA, Neoplasm; 0 / RhoH protein, human; 0 / Transcription Factors; EC 3.5.4.5 / Cytidine Deaminase; EC 3.6.5.2 / rho GTP-Binding Proteins

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] T-cell leukemia 1 expression in nodal Epstein-Barr virus-negative diffuse large B-cell lymphoma and primary mediastinal B-cell lymphoma.

The physiologic expression of the product of the proto-oncogene TCL1 (T-cell leukemia 1) is primarily restricted to early embryonic cells.

It has been shown that TCL1 is a powerful B-cell oncogene, which has been implicated in the pathogenesis of various types of mature B-cell lymphomas.

There is no comparative information in the literature addressing the expression of TCL1 in pediatric and adult nodal diffuse large B-cell lymphoma or primary mediastinal large B-cell lymphoma.

We studied 55 cases of adult and pediatric diffuse large B-cell lymphoma and primary mediastinal large B-cell lymphoma to analyze the phenotypic profile of these lymphomas, including TCL1 expression, and its relationship with clinical outcome in different age groups.

TCL1 was observed in 11 cases, 5 pediatric and 6 adult cases, all but one diffuse large B-cell lymphoma.

TCL1 positivity was predominantly found in germinal center phenotype diffuse large B-cell lymphoma.

Primary mediastinal large B-cell lymphomas infrequently expressed TCL1 in both age groups.

[MeSH-major] Epstein-Barr Virus Infections / metabolism. Herpesvirus 4, Human / isolation & purification. Lymphoma, B-Cell / metabolism. Lymphoma, Large B-Cell, Diffuse / metabolism. Mediastinal Neoplasms / metabolism. Proto-Oncogene Proteins / metabolism

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[Copyright] Copyright 2010 Elsevier Inc. All rights reserved.

(PMID = 20382409.001).

[ISSN] 1532-8392

[Journal-full-title] Human pathology

[ISO-abbreviation] Hum. Pathol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / Proto-Oncogene Proteins; 0 / Proto-Oncogene Proteins c-myc; 0 / TCL1A protein, human

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal (thymic) large B cell lymphoma with aberrant expression of CD3: a case report with review of the literature.

We report the first case of primary mediastinal large B cell lymphoma (PMBL) with aberrant expression of CD3.

PMBL is a subtype of diffuse large B cell lymphoma (DLBCL) and usually presents with bulky mediastinal lesions.

Of the 14 total cases, 6 are pyothorax-associated lymphoma, 4 are conventional DLBCL, 2 are plasmablastic lymphoma, one is primary effusion lymphoma and one is PMBL.

[MeSH-major] Antigens, CD3 / metabolism. Lymphoma, Large B-Cell, Diffuse / metabolism. Lymphoma, Large B-Cell, Diffuse / pathology. Mediastinal Neoplasms / metabolism. Mediastinal Neoplasms / pathology

[MeSH-minor] Adult. Biopsy. Female. Humans. Radiography. Thymus Neoplasms / diagnostic imaging. Thymus Neoplasms / metabolism. Thymus Neoplasms / pathology

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(PMID = 20131102.001).

[ISSN] 1865-3774

[Journal-full-title] International journal of hematology

[ISO-abbreviation] Int. J. Hematol.

[Language] eng

[Publication-type] Case Reports; Journal Article; Review

[Publication-country] Japan

[Chemical-registry-number] 0 / Antigens, CD3

[Number-of-references] 15

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Mediastinal gray zone lymphoma: the missing link between classic Hodgkin's lymphoma and mediastinal large B-cell lymphoma.

In recent years, overlap in biologic and morphologic features has been identified between classic Hodgkin lymphoma (cHL) and B-cell non-Hodgkin lymphoma.

We undertook a study of "mediastinal gray zone lymphomas" (MGZL), with features transitional between cHL nodular sclerosis (NS) and primary mediastinal large B-cell lymphoma (MLBCL) to better understand the morphologic and immunophenotypic spectrum of such cases.

We also studied 6 cases of composite or synchronous lymphoma with two distinct components at the same time (cHL-NS and MLBCL) and 9 sequential cases with MLBCL and cHL-NS at different times.

All patients had a large mediastinal mass.

Immunohistochemical studies focused on markers known to discriminate between cHL and MLBCL, including B-cell transcription factors.

Of the gray zone cases, 11 had morphology reminiscent of cHL-NS, but with unusual features, including a large number of mononuclear variants, diminished inflammatory background, absence of classic Hodgkin phenotype, and strong CD20 expression (11 of 11).

B-cell transcription factor expression in the gray zone cases more closely resembled MLBCL than cHL with expression of Pax5, Oct2, and BOB.1 in all but 1 case studied (14 of 15).

Two cases of sequential lymphoma showed rearrangements of the IgH gene of identical size: one in which MLBCL was the first diagnosis and one in which MLBCL was diagnosed at relapse, indicating clonal identity for the two components of cHL and MLBCL.

Further support for a relationship between MLBCL and cHL-NS is provided by composite and metachronous lymphomas in the same patient, as well as the existence of MGZL with transitional morphology and phenotype.

[MeSH-major] Hodgkin Disease / pathology. Lymphoma, B-Cell / pathology. Mediastinal Neoplasms / pathology

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(PMID = 16224207.001).

[ISSN] 0147-5185

[Journal-full-title] The American journal of surgical pathology

[ISO-abbreviation] Am. J. Surg. Pathol.

[Language] eng

[Grant] United States / Intramural NIH HHS / /

[Publication-type] Journal Article; Research Support, N.I.H., Intramural

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Advanced stage, elevated LDH, primary sites, but not adolescent (A) age (≥ 15 years) as risk factors for disease progression in childhood (C) and adolescent (A) mature B-NHL: Report of the FAB/LMB 96 international trial.

METHODS: We analyzed the EFS of all pts treated on FAB/LMB 96 and the following risk factors were significant in a univariate and Cox multivariate analysis: age (<15 vs ≥15 yrs), stage I/II vs III/IV, primary sites, LDH <2 vs ≥2 NL and histology (DLBCL vs BL/BLL).

Multivariate analysis demonstrated age ≥15 yrs and DLBCL histology were no longer independent significant risk factors (p = .82 and 0.08, respectively), but LDH (RR 2.0, p = .001), stage III/IV (RR 3.8, p<0.001), and primary sites including PMBL (RR 4.0, p<.001) and BM+/CNS+ (RR 2.8, p<0.001) were independent significant risk factors for poorer outcome.

The independent risk factors identified in this study (stage, LDH, primary site) for decreased EFS in C & A mature B-NHL will form the basis of the next risk adapted international pediatric mature B-NHL trial.

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(PMID = 27962579.001).

[ISSN] 1527-7755

[Journal-full-title] Journal of clinical oncology : official journal of the American Society of Clinical Oncology

[ISO-abbreviation] J. Clin. Oncol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Burkitt lymphoma in children: The Israel Society of Pediatric Hematology Oncology retrospective study.

: 10051 Background: From 2000 to 2005, the Israel Society of Pediatric Hematology Oncology studied the results of the FAB-LMB 96 protocol in children with B cell lymphoma.

Fifty patients (57%) were classified as burkitt lymphoma, 5 (5.7%) as burkitt-like lymphoma, 22 (25%) as diffuse large B cell (DLBC), 9 (10.2%) as burkitt leukemia.

Initial disease sites included the abdomen in 43%, head and neck in 45%, mediastinum in 7%.

OS according to primary site: bone and ovary (100%), head and neck (95%), abdomen (92%) and mediastinum (50%) (p = 0.003).

All of the mediastinal tumors were of DLBC origin, but when comparing the DLBC to other histologies, no significant difference in outcome were found.(DLBC: 81.8%, other B line: 90.9%).

CONCLUSIONS: In nonresected mature B cell lymphoma of childhood and adolescence with no BM or CNS involvement, a 93% cure rate was achieved.

Patients with primary DLBC mediastinal mass had a significantly reduced overall survival, indicating the need for a different therapeutic approach.

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(PMID = 27962447.001).

[ISSN] 1527-7755

[Journal-full-title] Journal of clinical oncology : official journal of the American Society of Clinical Oncology

[ISO-abbreviation] J. Clin. Oncol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Association of primary mediastinal B-cell lymphoma (PMBL) in children (C) and adolescents (A) with a significantly inferior prognosis: Final results of the FAB/LMB 96 trial.

: 10001 Background: Single pediatric cooperative group studies have demonstrated an EFS ranging from 65 - 75% in C & A with large cell lymphomas arising in the mediastinum (Lones/Cairo et al, J Clin Oncol, 2000; Burkhardt/Reiter et al, Br J Haematol, 2005; Seidman/Reiter et al, J Clin Oncol, 2003).

Recently, Staudt and Shipp have independently demonstrated that following gene expression profiling by oligonucleotide microarray that PMBL resembles more like classical Hodgkin lymphoma than diffuse large B-cell lymphoma with enhanced NF-κB pathway gene expression (Rosenwald et al, J Exp Med, 2003; Abramson et al, Blood, 2005).

It remains to be determined what the optimal therapy for C & A with PMBL is and if poor outcome subgroups can be identified.

METHODS: We analyzed the results of C & A with PMBL treated with group B therapy on FAB/LMB 96 (Patte/Cairo et al, Blood, 2007).

Forty-two of these patients had PMBL; M/F: 26/16; 10 - 14 vs 15 -19 yrs: 28/14; and LDH < 2 vs ≥ 2 upper normal: 20/22.

CONCLUSIONS: PMBL in C & A is associated with a significantly inferior EFS compared to other histological forms of stage III/IV mature B-NHL.

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(PMID = 27962546.001).

[ISSN] 1527-7755

[Journal-full-title] Journal of clinical oncology : official journal of the American Society of Clinical Oncology

[ISO-abbreviation] J. Clin. Oncol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Mediastinal large B-cell lymphoma associated with systemic sclerosis].

Malignant lymphoma (ML) is frequently associated with several forms of collagen diseases such as Sjören syndrome, systemic lupus erythematodes, and rheumatoid arthritis.

Here we report an SSc patient who developed mediastinal (thymic) large B-cell lymphoma (MLBCL).

One year after the diagnosis, chest computed tomography-scan demonstrated thymic tumor in the anterior mediastinum.

Thymectomy was performed, and a pathohistological diagnosis of MLBCL was established.

The patient was treated with 6 courses of CHOP regimen, resulting in complete remission of lymphoma.

[MeSH-major] Lymphoma, Large B-Cell, Diffuse / etiology. Scleroderma, Systemic / complications. Thymus Neoplasms / etiology

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(PMID = 19265302.001).

[ISSN] 0485-1439

[Journal-full-title] [Rinshō ketsueki] The Japanese journal of clinical hematology

[ISO-abbreviation] Rinsho Ketsueki

[Language] jpn

[Publication-type] Case Reports; English Abstract; Journal Article

[Publication-country] Japan

[Chemical-registry-number] 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; 9PHQ9Y1OLM / Prednisolone; VAP-cyclo protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal (thymic) large B-cell lymphoma with a der(14)t(8;14)(q24;q32) and a translocation of MYC to the derivative chromosome 14 with a deleted IgH locus.

We report a case of primary mediastinal (thymic) large B-cell lymphoma (PMBL) with an initial karyotype containing numerical chromosomal aberrations: +X, +9, +12, +21, and a novel translocation t(2;11)(q?31; q23 approximately 24) with a duplication of the derivative chromosome 11.

Our data show definitively the existence of the t(8;14) in PMBL, previously only suspected.

This finding supplies additional evidence that a translocation-mediated MYC activation may be an important event in the pathogenesis of this unique lymphoma.

[MeSH-major] Chromosome Deletion. Chromosomes, Human, Pair 14. Genes, Immunoglobulin Heavy Chain. Genes, myc. Lymphoma, B-Cell / genetics. Mediastinal Neoplasms / genetics. Translocation, Genetic

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(PMID = 17011988.001).

[ISSN] 0165-4608

[Journal-full-title] Cancer genetics and cytogenetics

[ISO-abbreviation] Cancer Genet. Cytogenet.

[Language] eng

[Publication-type] Case Reports; Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal large B-cell lymphoma in an HIV-infected patient.

HIV-related non-Hodgkin lymphoma is well documented in the literature.

We report a case of an HIV-infected patient who presents with primary mediastinal large B-cell lymphoma.

On review of the literature, this appears to be the first documented case of this subtype of large B-cell non-Hodgkin lymphoma seen in an HIV-infected patient.

[MeSH-major] Lymphoma, AIDS-Related / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis

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(PMID = 15767818.001).

[ISSN] 0002-9629

[Journal-full-title] The American journal of the medical sciences

[ISO-abbreviation] Am. J. Med. Sci.

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] United States

[Chemical-registry-number] 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; VB0R961HZT / Prednisone; CHOP protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] MACOP-B and involved-field radiotherapy is an effective and safe therapy for primary mediastinal large B cell lymphoma.

PURPOSE: To report the clinical findings and long-term results of front-line, third-generation MACOP-B (methotrexate, doxorubicin, cyclophosphamide, vincristine, prednisone, and bleomycin) chemotherapy and mediastinal involved-field radiotherapy (IFRT) in 85 consecutive, previously untreated patients with primary mediastinal large B cell lymphoma (PMLBCL) diagnosed and managed at a single institution.

The median age was 33 years (range, 15-61 years), 46 patients (50%) showed a mediastinal syndrome at onset; 52 patients (57%) showed a low/low-intermediate (0 to 1) and 40 patients (43%) an intermediate-high/high (2 to 3) International Prognostic Index (IPI) score.

Eighty-five patients were treated with standard chemotherapy (MACOP-B), and 80 underwent mediastinal IFRT at a dose of 30-36 Gy.

CONCLUSIONS: Combined-modality treatment with intensive chemotherapy plus mediastinal IFRT induces high response and lymphoma-free survival rates.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / administration & dosage. Lymphoma, B-Cell / mortality. Lymphoma, B-Cell / therapy. Mediastinal Neoplasms / mortality. Mediastinal Neoplasms / therapy

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(PMID = 18472357.001).

[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] Clinical Trial; Journal Article

[Publication-country] United States

[Chemical-registry-number] 11056-06-7 / Bleomycin; 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; Q573I9DVLP / Leucovorin; VB0R961HZT / Prednisone; YL5FZ2Y5U1 / Methotrexate; MACOP-B protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Rituximab combined with MACOP-B or VACOP-B and radiation therapy in primary mediastinal large B-cell lymphoma: a retrospective study.

BACKGROUND: Third-generation regimens (MACOP-B [methotrexate/leucovorin (LV)/doxorubicin/cyclophosphamide/vincristine/ prednisone/bleomycin] or VACOP-B [etoposide/LV/doxorubicin/cyclophosphamide/vincristine/prednisone/bleomycin]) in combination with local radiation therapy seem to improve lymphoma-free survival of primary mediastinal large B-cell lymphoma (PMLBCL).

Recently, the superiority of R-CHOP (rituximab plus cyclophosphamide/doxorubicin/vincristine/ prednisone) over CHOP-like regimens has been demonstrated in elderly and younger patients with low-risk diffuse large B-cell lymphoma.

PATIENTS AND METHODS: Retrospectively, between February 2002 and July 2006, 45 previously untreated patients with PMLBCL were treated with a combination of a third-generation chemotherapy regimen (MACOP-B or VACOP-B), concurrent rituximab, and mediastinal radiation therapy.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Lymphoma, Large B-Cell, Diffuse / drug therapy. Lymphoma, Large B-Cell, Diffuse / radiotherapy. Mediastinal Neoplasms / drug therapy. Mediastinal Neoplasms / radiotherapy

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(PMID = 19858058.001).

[ISSN] 1938-0712

[Journal-full-title] Clinical lymphoma & myeloma

[ISO-abbreviation] Clin Lymphoma Myeloma

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 11056-06-7 / Bleomycin; 4F4X42SYQ6 / Rituximab; 5J49Q6B70F / Vincristine; 6PLQ3CP4P3 / Etoposide; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; Q573I9DVLP / Leucovorin; VB0R961HZT / Prednisone; YL5FZ2Y5U1 / Methotrexate; MACOP-B protocol; VACOP-B protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Improved treatment outcome of primary mediastinal large B-cell lymphoma after introduction of rituximab in Korean patients.

The addition of rituximab to cyclophosphamide, doxorubicin, vincristine and prednisone (CHOP) improved the outcome of patients with diffuse large B-cell lymphoma (DLBCL).

However, the impact of rituximab (R-CHOP) is still not determined in primary mediastinal large B-cell lymphoma (PMBCL), a subtype of DLBCL, especially in Asian patients.

[MeSH-major] Antibodies, Monoclonal / administration & dosage. Antineoplastic Combined Chemotherapy Protocols / administration & dosage. Lymphoma, Large B-Cell, Diffuse / drug therapy. Lymphoma, Large B-Cell, Diffuse / mortality. Mediastinal Neoplasms / drug therapy

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(PMID = 20198460.001).

[ISSN] 1865-3774

[Journal-full-title] International journal of hematology

[ISO-abbreviation] Int. J. Hematol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] Japan

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 4F4X42SYQ6 / Rituximab; 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; VB0R961HZT / Prednisone; CHOP protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Pneumomediastinum as a complication to treatment of mediastinal (thymic) large B-cell lymphoma.

Mediastinal (thymic) large B-cell lymphoma (Med-DLBCL) is a subtype of diffuse large B-cell lymphomas (DLBCL) with a typical radiological appearance of bulky anterior mediastinal mass, often with areas of necrosis.

Computed tomography (CT) obtained at presentation revealed a huge anterior mediastinal tumor with an axial diameter of 180 mm.

Nineteen days after the first cycle of chemotherapy, chest radiography and CT revealed large areas of tumor necrosis and pneumomediastinum with air-fluid levels.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / adverse effects. Lymphoma, B-Cell / complications. Lymphoma, Large B-Cell, Diffuse / complications. Mediastinal Emphysema / etiology. Mediastinal Neoplasms / complications. Thymus Neoplasms / complications

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(PMID = 16134313.001).

[ISSN] 0284-1851

[Journal-full-title] Acta radiologica (Stockholm, Sweden : 1987)

[ISO-abbreviation] Acta Radiol

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] Sweden

[Chemical-registry-number] 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; VB0R961HZT / Prednisone; CHOP protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Mediastinal large B-cell lymphoma with symptomatic superior vena cava syndrome in a patient with bichorial twin pregnancy in the 26th week of gestation: peri-and postpartal management -- a case report].

[Transliterated title] Grosszelliges B-Zell-Lymphom des Mediastinums mit symptomatischer oberer Einflussstauung bei bichorialer Geminigravidität in der 26. SSW: Peri-und postpartales Management -- Ein Fallbericht.

OBJECTIVE: Non-Hodgkin lymphoma (NHL) is rarely observed during pregnancy.

CASE REPORT: In this report, we describe the case of a 31-year-old gravida three, para two, in whom a mediastinal large B-cell lymphoma with symptomatic superior vena cava syndrome was diagnosed in a bichorial twin pregnancy in the 26 (th) week of gestation.

After premature delivery by caesarean section at 26 + 0 weeks gestation the patient was immediately submitted to mediastinal irradiation.

DISCUSSION: To our knowledge, this is the first case in the literature of a patient with bichorial twin pregnancy with large cell mediastinal NHL and symptomatic superior vena cava syndrome who underwent irradiation after caesarean section because of life-threatening medical condition.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Lymphoma, B-Cell / diagnosis. Pregnancy Complications, Neoplastic / diagnosis. Superior Vena Cava Syndrome / diagnosis

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(PMID = 16037907.001).

[ISSN] 0044-4197

[Journal-full-title] Zentralblatt für Gynäkologie

[ISO-abbreviation] Zentralbl Gynakol

[Language] ger

[Publication-type] Case Reports; English Abstract; Journal Article

[Publication-country] Germany

[Chemical-registry-number] 5J49Q6B70F / Vincristine; 6PLQ3CP4P3 / Etoposide; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; 9PHQ9Y1OLM / Prednisolone; CHOEP protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Long-term administration of a low-molecular-weight heparin contributed to successful treatment in a patient with primary mediastinal large B-cell lymphoma and venous thromboembolism.

The case of a 16-year-old girl with primary mediastinal large B-cell lymphoma who had thrombosis in the brachiocephalic, subclavian, and internal jugular veins at presentation is reported.

This case suggests that long-term administration of an LMWH contributes to the primary improvement and secondary prevention of VTE even in patients who are at high risk for thrombosis.

[MeSH-major] Heparin, Low-Molecular-Weight / therapeutic use. Lymphoma, Large B-Cell, Diffuse / drug therapy. Mediastinal Neoplasms / drug therapy. Venous Thromboembolism / drug therapy

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(PMID = 18252727.001).

[ISSN] 1076-0296

[Journal-full-title] Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis

[ISO-abbreviation] Clin. Appl. Thromb. Hemost.

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 0 / Heparin, Low-Molecular-Weight; 11056-06-7 / Bleomycin; 4F4X42SYQ6 / Rituximab; 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; Q573I9DVLP / Leucovorin; VB0R961HZT / Prednisone; YL5FZ2Y5U1 / Methotrexate; MACOP-B protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Treatment of primary mediastinal large B cell lymphoma with an alternating chemotherapy regimen based on high-dose methotrexate.

Primary mediastinal large B cell lymphomas (MLCL) differ from other diffuse large cell lymphomas, leading to a description as a separate entity in the current World Health Organization classification.

We investigated the use of a high-dose methotrexate-based alternating chemotherapy regimen (B-ALL protocol of the German ALL study group) followed by consolidative mediastinal radiotherapy first as a single-center trial, then later as a prospective multicenter trial in 44 patients with a median age of 33 years.

No relapse occurred more than 2 years after diagnosis and initiation of treatment, but unfortunately, no patient with overt progression or relapse within these 2 years could be salvaged.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Lymphoma, B-Cell / drug therapy. Mediastinal Neoplasms / diagnosis. Mediastinal Neoplasms / drug therapy. Methotrexate / administration & dosage

[MeSH-minor] Adolescent. Adult. Aged. Diagnosis, Differential. Drug-Related Side Effects and Adverse Reactions. Female. Humans. Lymphoma, Large B-Cell, Diffuse / diagnosis. Male. Middle Aged. Recurrence. Survival Rate. Treatment Outcome. Young Adult

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(PMID = 18853160.001).

[ISSN] 1432-0584

[Journal-full-title] Annals of hematology

[ISO-abbreviation] Ann. Hematol.

[Language] eng

[Publication-type] Clinical Trial; Journal Article; Multicenter Study

[Publication-country] Germany

[Chemical-registry-number] YL5FZ2Y5U1 / Methotrexate

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] BOB.1, CD79a and cyclin E are the most appropriate markers to discriminate classical Hodgkin's lymphoma from primary mediastinal large B-cell lymphoma.

AIMS: To clarify which immunohistochemical markers could be helpful in distinguishing between classical Hodgkin's lymphoma (cHL) and primary mediastinal B-cell lymphoma (PMBCL) to more narrowly define 'B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and cHL'.

CONCLUSIONS: The use of at least three of the most accurate immunohistochemical markers, cyclin E, CD79a and BOB.1, may be helpful in the differential diagnosis of cHL and PMBCL.

[MeSH-major] Antigens, CD79 / analysis. Biomarkers, Tumor. Cyclin E / analysis. Hodgkin Disease / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Trans-Activators / analysis

[MeSH-minor] Antibodies, Neoplasm / immunology. Diagnosis, Differential. Humans. Immunohistochemistry. Predictive Value of Tests. ROC Curve

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(PMID = 20102401.001).

[ISSN] 1365-2559

[Journal-full-title] Histopathology

[ISO-abbreviation] Histopathology

[Language] eng

[Publication-type] Journal Article

[Publication-country] England

[Chemical-registry-number] 0 / Antibodies, Neoplasm; 0 / Antigens, CD79; 0 / Biomarkers, Tumor; 0 / Cyclin E; 0 / POU2AF1 protein, human; 0 / Trans-Activators

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Post-anaesthetic maternal death in a patient with mediastinal large B-cell lymphoma: a case report.

Autopsy demonstrated the presence of a large mediastinal tumour, whose existence was apparently unsuspected preoperatively, encasing the ascending thoracic aorta, aortic arch and the proximal segments of the brachiocephalic and subclavian arteries, and causing extrinsic airway compression.

Subsequent microscopic examination showed histological and immunohistochemical features of a mediastinal large B-cell lymphoma.

It is thought that the mechanical effects exerted by the advanced mediastinal tumour upon the airways and the thoracic cage, coupled with the pathophysiological effects of general anaesthesia on respiratory movement and airway patency, had led to the patient's unfortunate demise in early pregnancy.

[MeSH-major] Anesthesia. Lymphoma, B-Cell / pathology. Maternal Mortality. Mediastinal Neoplasms / physiopathology

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(PMID = 17345895.001).

[ISSN] 0025-8024

[Journal-full-title] Medicine, science, and the law

[ISO-abbreviation] Med Sci Law

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] England

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Primary mediastinal large B-cell lymphoma: histopathologic features. A specific tumour].

[Transliterated title] Le lymphome B à grandes cellules primitif du mediastin, une tumeur particulière. Aspects anatomopathologiques.

The diffuse large B-cell lymphomas of the mediastinum were long considered to be a variant of the classic forms of large B-cell lymphomas.

However, their clinical and radiological features and especially their histopathological variants point to other lymphoid tumours such as Hodgkin's disease or anaplastic lymphomas, thymic tumours, germ cell tumours or metastatic tumors.

The immunohistochemical findings are of prime importance in the diagnosis.

Currently, they represent a distinct entity among the large B-cell lymphomas, due to their clinical, pathological and molecular features as well as the outcome.

[MeSH-major] Lymphoma, Large B-Cell, Diffuse / pathology. Mediastinal Neoplasms / pathology

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[Copyright] Copyright 2009 Elsevier Masson SAS. All rights reserved.

(PMID = 20561485.001).

[ISSN] 0761-8417

[Journal-full-title] Revue de pneumologie clinique

[ISO-abbreviation] Rev Pneumol Clin

[Language] fre

[Publication-type] Case Reports; English Abstract; Journal Article

[Publication-country] France

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal B-cell lymphoma.

Primary mediastinal B-cell lymphoma (PMBCL) is a sub-type of the heterogeneous diffuse large B-cell lymphoma category, and comprises approximately 5% of all non-Hodgkin's lymphomas (NHL).

Gene expression profiling has suggested a partial overlap with nodular sclerosing Hodgkin lymphoma (HL), with which it shares some clinical features.

There is uncertainty as to whether weekly alternating chemotherapy regimens may be more effective than CHOP, whether consolidation radiotherapy (RT) to the mediastinum is always required, whether PET scanning can be used to determine this, and whether the use of rituximab as part of initial therapy will change the answers to these questions.

The International Extranodal Lymphoma Study Group (IELSG) 26 clinicopathologic study of PMBCL, which has recently opened, represents a first attempt to gather data prospectively on some of these issues.

[MeSH-major] Lymphoma, B-Cell / pathology. Mediastinal Neoplasms / pathology

[MeSH-minor] Cytogenetic Analysis. Disease Management. Gene Expression Profiling. Humans. Immunophenotyping. Lymphoma, Large B-Cell, Diffuse

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[Copyright] 2007 John Wiley & Sons, Ltd

(PMID = 17575573.001).

[ISSN] 0278-0232

[Journal-full-title] Hematological oncology

[ISO-abbreviation] Hematol Oncol

[Language] eng

[Publication-type] Journal Article; Review

[Publication-country] England

[Number-of-references] 54

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal large B-cell lymphoma.

Primary mediastinal large B-cell lymphoma is a subtype of diffuse large B-cell lymphoma, which has distinct clinical and molecular features, many of which are similar to that of nodular sclerosing/classical Hodgkin lymphoma.

Anthracycline-based chemotherapy forms the foundation for treatment of this lymphoma.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols. Lymphoma, Large B-Cell, Diffuse / drug therapy. Mediastinal Neoplasms / drug therapy

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(PMID = 19367254.001).

[ISSN] 1543-0790

[Journal-full-title] Clinical advances in hematology & oncology : H&O

[ISO-abbreviation] Clin Adv Hematol Oncol

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Anthracyclines; 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 4F4X42SYQ6 / Rituximab; 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; 9PHQ9Y1OLM / Prednisolone; VAP-cyclo protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Cure of a patient with profoundly chemotherapy-refractory primary mediastinal large B-cell lymphoma: role of rituximab, high-dose therapy, and allogeneic stem cell transplantation.

Patients with primary large B-cell lymphomas of the mediastinum (PMBL) who suffer early relapse have a low likelihood of achieving a prolonged second remission with conventional salvage therapy.

Here we describe the case of a 33-year-old woman with PMBL refractory to 6 lines of therapy before undergoing salvage therapy with rituximab, ifosfamide and etoposide followed by high-dose therapy, autologous transplantation, and sequential non-myeloablative allogeneic transplantation, who remains in ongoing complete remission for more than 39 months and is apparently cured.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Lymphoma, B-Cell / therapy. Lymphoma, Large B-Cell, Diffuse / therapy. Mediastinal Neoplasms / therapy. Neoplasm Recurrence, Local / therapy. Salvage Therapy. Stem Cell Transplantation

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(PMID = 16019561.001).

[ISSN] 1042-8194

[Journal-full-title] Leukemia & lymphoma

[ISO-abbreviation] Leuk. Lymphoma

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] England

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 4F4X42SYQ6 / Rituximab; 6PLQ3CP4P3 / Etoposide; UM20QQM95Y / Ifosfamide

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Expression of Grb2 distinguishes classical Hodgkin lymphomas from primary mediastinal B-cell lymphomas and other diffuse large B-cell lymphomas.

Growth factor receptor-bound protein 2 is an adaptor molecule that mediates B-cell receptor (BCR) signaling pathways, but the expression of growth factor receptor-bound protein 2 in lymphoma tissues has not been reported.

We sought to characterize growth factor receptor-bound protein 2 protein expression in reactive tonsillar tissues and lymphoma tissues obtained from diagnostic biopsies of classical Hodgkin lymphoma, primary mediastinal large B-cell lymphoma, diffuse large B-cell lymphoma, nodular lymphocyte predominant Hodgkin lymphoma, and 20 low-grade B-cell lymphomas.

Growth factor receptor-bound protein 2 expression was assessed in tissues by immunohistochemistry and in lymphoma cell lines by immunoblotting.

In reactive lymphoid tissues, growth factor receptor-bound protein 2 was expressed in the cytoplasm of B-cells and histiocytes but not T-cells.

Strong, cytoplasmic growth factor receptor-bound protein 2 expression was seen in the neoplastic cells of follicular lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma, splenic marginal zone lymphoma, primary mediastinal large B-cell lymphoma, diffuse large B-cell lymphoma, and nodular lymphocyte predominant Hodgkin lymphoma.

In contrast, only 10% of the classical Hodgkin lymphomas showed growth factor receptor-bound protein 2 expression in the neoplastic cells.

Growth factor receptor-bound protein 2 protein expression was detected by Western blotting in all lymphoma cell lines tested with higher levels in primary mediastinal large B-cell lymphoma compared with classical Hodgkin lymphoma cell lines.

These findings support a role for growth factor receptor-bound protein 2 in the diagnostically challenging workup of classical Hodgkin lymphoma versus primary mediastinal large B-cell lymphoma and warrant further studies to evaluate the biologic significance of growth factor receptor-bound protein 2 in the pathogenesis of classical Hodgkin lymphoma.

[MeSH-major] Biomarkers, Tumor / analysis. GRB2 Adaptor Protein / biosynthesis. Hodgkin Disease / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis

[MeSH-minor] Blotting, Western. Diagnosis, Differential. Humans. Immunohistochemistry. Tissue Array Analysis

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(PMID = 19716163.001).

[ISSN] 1532-8392

[Journal-full-title] Human pathology

[ISO-abbreviation] Hum. Pathol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / GRB2 Adaptor Protein; 0 / GRB2 protein, human

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Favorable outcome of primary mediastinal large B-cell lymphoma in a single institution: the British Columbia experience.

BACKGROUND: Primary mediastinal large B-cell lymphoma (PMBCL) is a distinct clinico-pathological subtype of diffuse large B-cell lymphoma (DLBCL).

PATIENTS AND METHODS: The British Columbia Cancer Agency lymphoma database was searched and records reviewed to identify those patients presenting with a prominent mediastinal mass and considered to be PMBCL based on the current REAL/WHO classifications.

Patients were treated based on era-specific BCCA guidelines (1980-1992 MACOPB/VACOPB; 1992-2001 CHOP-type; 2001-present CHOP-R).

The median age was 37 years (range 13-82) and the majority had stage I/II (74%), bulky mediastinal disease (75%).

Five-year OS in patients < 65 years old treated with MACOPB/VACOPB, CHOP-R and CHOP-type was 87%, 81% and 71% respectively (P = 0.048).

In pair-wise survival comparisons, only MACOPB/VACOPB and CHOP-type treated patients were significantly different (P = 0.016).

In Cox multiple regression analysis, poor performance status remained the only predictor of survival, with treatment received demonstrating a trend to worse outcome for patients treated with CHOP-type regimens (P = 0.09).

Dose-intensified chemotherapy with MACOPB or VACOPB demonstrated a trend to superior outcome over CHOP-type chemotherapy.

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(PMID = 16236753.001).

[ISSN] 0923-7534

[Journal-full-title] Annals of oncology : official journal of the European Society for Medical Oncology

[ISO-abbreviation] Ann. Oncol.

[Language] ENG

[Publication-type] Journal Article

[Publication-country] England

[Chemical-registry-number] 11056-06-7 / Bleomycin; 5J49Q6B70F / Vincristine; 6PLQ3CP4P3 / Etoposide; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; Q573I9DVLP / Leucovorin; VB0R961HZT / Prednisone; YL5FZ2Y5U1 / Methotrexate

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] High expression of several tyrosine kinases and activation of the PI3K/AKT pathway in mediastinal large B cell lymphoma reveals further similarities to Hodgkin lymphoma.

Mediastinal large B-cell (MBL) and classical Hodgkin lymphoma (HL) have several pathogenic mechanisms in common.

Indeed, MBL and HL were the only B-cell lymphomas where elevated cellular phospho-tyrosine contents were typical features.

Among the intracellular pathways frequently triggered by TKs, the PI3K/AKT pathway was activated in about 40% of MBLs and essential for survival of MBL cell lines, whereas the RAF/mitogen-activated protein kinase pathway seemed to be inhibited.

No activating mutations were detected in the three TKs in MBL cell lines and primary cases.

[MeSH-major] Gene Expression Regulation, Neoplastic. Hodgkin Disease / genetics. Lymphoma, B-Cell / genetics. Oncogene Protein v-akt / genetics. Phosphatidylinositol 3-Kinases / genetics. Protein-Tyrosine Kinases / genetics

[MeSH-minor] Enzyme Activation. Gene Expression Regulation, Enzymologic. Humans. Lymphoma, Large B-Cell, Diffuse / enzymology. Lymphoma, Large B-Cell, Diffuse / genetics

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(PMID = 17375124.001).

[ISSN] 0887-6924

[Journal-full-title] Leukemia

[ISO-abbreviation] Leukemia

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] England

[Chemical-registry-number] EC 2.7.1.- / Phosphatidylinositol 3-Kinases; EC 2.7.10.1 / Protein-Tyrosine Kinases; EC 2.7.11.1 / Oncogene Protein v-akt

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Mediastinal lymphomas: primary mediastinal (thymic) large B-cell lymphoma versus classical Hodgkin lymphoma, histopathologic dilemma solved?

Primary Mediastinal (Thymic) Large B-cell Lymphoma (PMLBL) frequently demonstrates clinical, morphologic and/or immunohistochemical (IHC) features that overlap with mediastinal-classical Hodgkin lymphoma (cHL).

Our study compared the immunohistochemical profile of PMLBL versus mediastinal cHL in a cohort of 18 patients, 11 of whom were diagnosed as having PMLBL, and 7 were diagnosed as having mediastinal cHL.

All mediastinal cHL cases (100%) showed negativity both for LCA and Pan T (CD(3)).

We conclude that 'Leucocyte Cell Antigen' (LCA) is the only marker that was consistently positive in PMLBL and negative in cHL.

[MeSH-major] Biomarkers, Tumor / analysis. Hodgkin Disease / metabolism. Lymphoma, Large B-Cell, Diffuse / metabolism. Mediastinal Neoplasms / metabolism

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[Copyright] 2010 Elsevier GmbH. All rights reserved.

(PMID = 20185248.001).

[ISSN] 1618-0631

[Journal-full-title] Pathology, research and practice

[ISO-abbreviation] Pathol. Res. Pract.

[Language] eng

[Publication-type] Journal Article

[Publication-country] Germany

[Chemical-registry-number] 0 / Biomarkers, Tumor

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Loss of major histocompatibility class II gene and protein expression in primary mediastinal large B-cell lymphoma is highly coordinated and related to poor patient survival.

Loss of major histocompatibility class II (MHC II) expression in diffuse large B-cell lymphoma (DLBCL) correlates with worse outcome, possibly from decreased immunosurveillance.

Primary mediastinal B-cell lymphoma (PMBCL) is a subtype of DLBCL which reportedly has frequent loss of MHC II proteins; however, PM-BCL has better survival than DLBCL.

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(PMID = 16543468.001).

[ISSN] 0006-4971

[Journal-full-title] Blood

[ISO-abbreviation] Blood

[Language] ENG

[Grant] United States / NCI NIH HHS / CA / U01-CA84967

[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 / Histocompatibility Antigens Class II; 0 / MHC class II transactivator protein; 0 / Nuclear Proteins; 0 / Trans-Activators; 9007-49-2 / DNA

[Other-IDs] NLM/ PMC1895840

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Practice guidelines for the management of extranodal non-Hodgkin's lymphomas of adult non-immunodeficient patients. Part I: primary lung and mediastinal lymphomas. A project of the Italian Society of Hematology, the Italian Society of Experimental Hematology and the Italian Group for Bone Marrow Transplantation.

Extranodal non-Hodgkin's lymphomas constitute 20-25% of overall non-Hodgkin's lymphomas cases and can be managed with very different therapeutic strategies.

Primary lung and mediastinal lymphomas were the objective of this part of the project.

The first-line therapy for non-MALT primary lung non-Hodgkin's lymphomas should include anthracycline-based chemotherapy with CHOP or CHOP-like, MACOP-B or MACOP-B-like regimens (grade D).

Second-line therapy with high-dose chemotherapy and autologous stem cell transplantation is recommended (grade B).

In patients with MALT primary lung non-Hodgkin's lymphomas, the recommended first-line therapy should include chlorambucil, CHOP, CHOP-like or fludarabine-containing regimens (grade B).

For treatment of primary mediastinal large B-cell lymphomas, the recommended first-line therapy is a chemotherapy and radiotherapy association (grade B).

Patients with refractory or relapsed disease should undergo rescue programs including intensive, non-cross-resistant debulking treatment followed, in chemosensitive patients, by high-dose chemotherapy and autologous stem cell transplantation (grade B).

[MeSH-major] Bone Marrow Transplantation. Lung Neoplasms / therapy. Lymphoma, Non-Hodgkin / therapy. Mediastinal Neoplasms / therapy. Practice Guidelines as Topic / standards

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(PMID = 18603558.001).

[ISSN] 1592-8721

[Journal-full-title] Haematologica

[ISO-abbreviation] Haematologica

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] Italy

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Fine-needle aspiration of a primary mediastinal large B-cell lymphoma: a case report with cytologic, histologic, and flow cytometric considerations.

Fine-needle aspiration (FNA) cytology and immunophenotyping by flow cytometry (FCM) are increasingly being used for diagnosing and subclassifying lymphoma in the REAL/WHO classification.

Herein, we report a case of primary mediastinal large B-cell lymphoma (PMBL), a subtype of diffuse large B-cell lymphoma in the WHO classification, diagnosed by FNA cytology in conjunction with FCM.

CT scan revealed a 5-cm anterior mediastinal mass and mediastinal lymphadenopathy.

Endoscopic ultrasound-guided FNA of a 4.5-cm subcarinal lymph node showed medium to large atypical lymphocytes with scant to moderate finely vacuolated cytoplasm.

Malignant large cell lymphoma was cytologically diagnosed.

FCM, performed on a portion of the FNA specimen, demonstrated large B cells devoid of surface immunoglobulin expression, the characteristic immunophenotype of PMBL.

The histologic diagnosis was PMBL.

Touch-imprint cytology of the histologic specimen showed large cells with a narrow rim of clear cytoplasm and prominent outer cell border.

In the presence of a mediastinal mass, FNA cytology in conjunction with FCM can effectively diagnose PMBL in the appropriate clinical setting.

[MeSH-major] Lymphoma, B-Cell / pathology. Mediastinal Neoplasms / pathology

[MeSH-minor] Antigens, CD / analysis. Biopsy, Fine-Needle. Female. Flow Cytometry. Humans. Lymphoma, Large B-Cell, Diffuse / pathology. Middle Aged

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(PMID = 15880713.001).

[ISSN] 8755-1039

[Journal-full-title] Diagnostic cytopathology

[ISO-abbreviation] Diagn. Cytopathol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Antigens, CD

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Inactivating SOCS1 mutations are caused by aberrant somatic hypermutation and restricted to a subset of B-cell lymphoma entities.

In primary mediastinal large B-cell lymphoma and Hodgkin lymphoma (HL), inactivating mutations in SOCS1, an inhibitor of JAK/STAT signaling, contribute to deregulated STAT activity.

Based on indications that the SOCS1 mutations are caused by the B cell-specific somatic hypermutation (SHM) process, we analyzed B-cell non-HL and normal B cells for mutations in SOCS1.

One-fourth of diffuse large B-cell lymphoma and follicular lymphomas carried SOCS1 mutations, which were preferentially targeted to SHM hotspot motifs and frequently obviously inactivating.

Rare mutations were observed in Burkitt lymphoma, plasmacytoma, and mantle cell lymphoma but not in tumors of a non-B-cell origin.

Mutations in single-sorted germinal center B cells were infrequent relative to other genes mutated as byproducts of normal SHM, indicating that SOCS1 inactivation in primary mediastinal large B-cell lymphoma, HL, diffuse large B-cell lymphoma, and follicular lymphoma is frequently the result of aberrant SHM.

[MeSH-major] Lymphoma, B-Cell / genetics. Somatic Hypermutation, Immunoglobulin / genetics. Suppressor of Cytokine Signaling Proteins / genetics

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(PMID = 19734449.001).

[ISSN] 1528-0020

[Journal-full-title] Blood

[ISO-abbreviation] Blood

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / SOCS1 protein, human; 0 / Suppressor of Cytokine Signaling Proteins

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal large B-cell lymphomas treated with dose-intensified CHOP alone or CHOP combined with radiotherapy.

We retrospectively reviewed 105 cases of primary mediastinal large B-cell lymphoma (PMLBL).

Radiotherapy was delivered to patients with a lymphoma proven sensitive to CHOP who could receive irradiation for localised disease.

[MeSH-minor] Adult. Combined Modality Therapy. Cyclophosphamide / administration & dosage. Doxorubicin / administration & dosage. Female. Humans. Lymphoma, Large B-Cell, Diffuse / drug therapy. Lymphoma, Large B-Cell, Diffuse / radiotherapy. Mediastinal Neoplasms / drug therapy. Mediastinal Neoplasms / radiotherapy. Prednisone / administration & dosage. Prognosis. Retrospective Studies. Survival Analysis. Treatment Outcome. Vincristine / administration & dosage

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(PMID = 18766963.001).

[ISSN] 1029-2403

[Journal-full-title] Leukemia & lymphoma

[ISO-abbreviation] Leuk. Lymphoma

[Language] eng

[Publication-type] Evaluation Studies; Journal Article

[Publication-country] England

[Chemical-registry-number] 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; VB0R961HZT / Prednisone; CHOP protocol

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Primary mediastinal large B-cell lymphoma: results of intensive chemotherapy regimens (MACOP-B/VACOP-B) plus involved field radiotherapy on 53 patients. A single institution experience.

PURPOSE: The optimal therapy for primary mediastinal large B-cell lymphoma (PMLBCL) remains undefined.

In the absence of randomized trials, we report clinical findings and treatment response in 53 consecutive patients treated with intensive chemotherapy and mediastinal involved-field radiation therapy (IFRT).

CONCLUSIONS: Our report confirms the efficacy of intensive chemotherapy plus mediastinal IFRT.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / administration & dosage. Lymphoma, B-Cell / mortality. Lymphoma, B-Cell / therapy. Neoplasm Recurrence, Local / mortality. Radiotherapy, Adjuvant / mortality

[MeSH-minor] Adolescent. Adult. Aged. Dose-Response Relationship, Drug. Female. Humans. Incidence. Italy / epidemiology. Male. Mediastinum. Middle Aged. Prognosis. Risk Assessment / methods. Risk Factors. Survival Analysis. Survival Rate. Treatment Outcome

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(PMID = 17379431.001).

[ISSN] 0360-3016

[Journal-full-title] International journal of radiation oncology, biology, physics

[ISO-abbreviation] Int. J. Radiat. Oncol. Biol. Phys.

[Language] eng

[Publication-type] Controlled Clinical Trial; Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Repression of B-cell linker (BLNK) and B-cell adaptor for phosphoinositide 3-kinase (BCAP) is important for lymphocyte transformation by rel proteins.

Microarray analysis to identify transformation-impacting genes regulated by NF-kappaB's oncogenic v-Rel and c-Rel proteins uncovered that Rel protein expression leads to transcriptional repression of key B-cell receptor (BCR) components and signaling molecules like B-cell linker (BLNK), the B-cell adaptor for phosphoinositide 3-kinase (BCAP) and immunoglobulin lambda light chain (Ig lambda), and is accompanied by a block in BCR-mediated activation of extracellular signal-regulated kinase, Akt, and c-Jun-NH(2)-kinase in response to anti-IgM.

Importantly, restoration of either BLNK or BCAP expression strongly inhibited transformation of primary chicken lymphocytes by the potent NF-kappaB oncoprotein v-Rel.

These findings are interesting because blnk and other BCR components and signaling molecules are down-regulated in primary mediastinal large B-cell lymphomas and Hodgkin's lymphomas, which depend on c-Rel for survival, and are consistent with the tumor suppressor function of BLNK.

Overall, our results indicate that down-regulation of BLNK and BCAP is an important contributing factor to the malignant transformation of lymphocytes by Rel and suggest that gene repression may be as important as transcriptional activation for Rel's transforming activity.

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(PMID = 18245482.001).

[ISSN] 1538-7445

[Journal-full-title] Cancer research

[ISO-abbreviation] Cancer Res.

[Language] ENG

[Grant] United States / NHGRI NIH HHS / HG / HG003470-01A2; United States / NCI NIH HHS / CA / R01 CA054999; United States / NHGRI NIH HHS / HG / R01 HG003470-01A2; United States / NHGRI NIH HHS / HG / R01 HG003470; United States / NHGRI NIH HHS / HG / HG003470-02; United States / NHGRI NIH HHS / HG / HG03470; United States / NHGRI NIH HHS / HG / R01 HG003470-02; United States / NCI NIH HHS / CA / CA054999

[Publication-type] Journal Article; Research Support, N.I.H., Extramural

[Publication-country] United States

[Chemical-registry-number] 0 / Adaptor Proteins, Signal Transducing; 0 / B cell linker protein; 0 / Chromatin; 0 / NF-kappa B; 0 / Oncogene Proteins v-rel; 0 / Proto-Oncogene Proteins c-rel; 0 / Transcription Factor RelA; 9007-49-2 / DNA

[Other-IDs] NLM/ NIHMS40427; NLM/ PMC2267479

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Bronchial infiltration with diffuse large B-cell lymphoma.

Non-Hodgkin's lymphoma (NHL) refers to a heterogeneous group of lymphoproliferative diseases with a diversity of clinical courses, including involvement in another organs.

NHL frequently involves the thoracic structures, and particularly the mediastinum and lung parenchyma.

Several clinical reports have described bronchial-associated lymphoid tissue (BALT) lymphoma as an endobronchial lesion, but endobronchial infiltration with diffuse large B-cell lymphoma is extremely rare.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Bronchial Neoplasms / pathology. Lymphoma, B-Cell / pathology

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(PMID = 16533528.001).

[ISSN] 0145-2126

[Journal-full-title] Leukemia research

[ISO-abbreviation] Leuk. Res.

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] England

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 0 / DNA Primers; 0 / Immunoglobulin Heavy Chains; 4F4X42SYQ6 / Rituximab; 6PLQ3CP4P3 / Etoposide; BG3F62OND5 / Carboplatin; UM20QQM95Y / Ifosfamide

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Primary mediastinal B-cell lymphoma].

[Transliterated title] Lymphomes B primitifs du médiastin: aspect clinique.

Primary mediastinal B-cell lymphoma (PMBL) is a clinicopathological entity among the world health organization classification of lymphoid neoplasms.

PMBL often concerns young adults, and the disease remains a localized disease in the majority of cases.

The outcome of patients with PMBL is variable and unlike diffuse large cell lymphomas, the international prognostic index seems to be less applicable to such disease.

However, high-dose chemotherapy supported by peripheral blood stem cell support is often warranted in poor-prognosis patients.

[MeSH-major] Lymphoma, B-Cell / diagnosis. Mediastinal Neoplasms / diagnosis

[MeSH-minor] Antibodies, Monoclonal / administration & dosage. Antibodies, Monoclonal, Murine-Derived. Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Combined Modality Therapy. Fluorodeoxyglucose F18. Hematopoietic Stem Cell Transplantation. Humans. Positron-Emission Tomography. Prognosis. Radiotherapy, Adjuvant. Rituximab. Young Adult

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[Copyright] Copyright (c) 2010. Published by Elsevier Masson SAS.

(PMID = 20207294.001).

[ISSN] 0761-8417

[Journal-full-title] Revue de pneumologie clinique

[ISO-abbreviation] Rev Pneumol Clin

[Language] fre

[Publication-type] English Abstract; Journal Article; Review

[Publication-country] France

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 0Z5B2CJX4D / Fluorodeoxyglucose F18; 4F4X42SYQ6 / Rituximab

[Number-of-references] 32

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [B-cell lymphoma of the nose cavity--case report].

INTRODUCTION: Non-Hodgkin's lymphoma of the nose and sinuses accounts for 5,8-8% of the tumors in that localisation.

Large B-cell lymphoma (DLBCL) are frequent in mediastinum, nasopharynx, stomach and retroperitoneal space.

AIM: The aim of the study was to show a case of the female patient presented DLBCL-lymphoma of the right nose cavity and cutaneous lymphoma of the right lower leg.

MATERIAL AND METHODS: We described a case of the 68-year-old female diagnosed in Otolaryngology Clinic of the Medical University in Bialystok with DLBCL-lymphoma of the right nose cavity.

One month later two tumors on the skin of the right lower leg was appeared (histological: DLBCL-lymphoma).

CONCLUSIONS: We present the case of the rare occurrence of a DLBCL-lymphoma of the nose cavity and the skin of the lower leg.

Chemotherapy, immunochemotherapy and radiotherapy are suitable treatment fort that type of lymphoma.

[MeSH-major] Lymphoma, Large B-Cell, Diffuse / pathology. Lymphoma, Large B-Cell, Diffuse / therapy. Paranasal Sinus Neoplasms / pathology. Paranasal Sinus Neoplasms / therapy. Skin Neoplasms / pathology. Skin Neoplasms / therapy

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(PMID = 18837234.001).

[ISSN] 0030-6657

[Journal-full-title] Otolaryngologia polska = The Polish otolaryngology

[ISO-abbreviation] Otolaryngol Pol

[Language] pol

[Publication-type] Case Reports; English Abstract; Journal Article

[Publication-country] Poland

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Mucosa-associated lymphoid tissue lymphoma of the thymus: a case report with no evidence of MALT1 rearrangement.

We report a case of thymic mucosa-associated lymphoid tissue (MALT) lymphoma (TML) that presented as an asymptomatic mediastinal mass in a 40-year-old woman with a past history of Sjögren syndrome.

This case had the characteristic clinical and pathological features of TML, as found in most of the 24 previously reported cases, i.e., autoimmune context, especially Sjögren syndrome, IgA secretion, large epithelial cysts, lymphoepithelial lesions involving residual Hassal's corpuscles, epithelial cysts, and a marked plasmacytic differentiation with IgA expression.

Neoplastic cells were negative for MAL, a marker of primary mediastinal large B cell lymphoma (PMBL).

Altogether, these findings further support that among MALT lymphomas, TML have peculiar clinical and morphological characteristics and appear not to involve MALT1 rearrangement.

They also suggest the absence of a relationship between TML and PMBL.

[MeSH-major] Lymphoma, B-Cell, Marginal Zone / genetics. Lymphoma, B-Cell, Marginal Zone / pathology. Neoplasm Proteins / genetics. Thymus Neoplasms / genetics. Thymus Neoplasms / pathology

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(PMID = 15650839.001).

[ISSN] 0945-6317

[Journal-full-title] Virchows Archiv : an international journal of pathology

[ISO-abbreviation] Virchows Arch.

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] Germany

[Chemical-registry-number] 0 / Immunoglobulin A; 0 / Neoplasm Proteins; EC 3.4.22.- / Caspases; EC 3.4.22.- / MALT1 protein, human

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Ectopic primary B cell lymphoma of the thyroid presenting as an anterior mediastinal mass. A case report.

Ectopic thyroid tumours arising in the mediastinum without connection to the cervical thyroid gland are very rare.

Follicular adenoma, papillary carcinoma and follicular carcinoma in the mediastinum has been reported, but primary ectopic thyroid B cell lymphoma has not been reported previously.

We report mediastinal primary ectopic thyroid large B cell lymphoma in an 80-year-old man.

Differential diagnosis from primary mediastinal large B cell lymphoma and clinicopathologic features are discussed.

[MeSH-major] Choristoma / pathology. Lymphoma, B-Cell / diagnosis. Mediastinal Neoplasms / diagnosis. Thyroid Gland

[MeSH-minor] Aged, 80 and over. Cell Transformation, Neoplastic. Humans. Male

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(PMID = 20184075.001).

[ISSN] 0001-5458

[Journal-full-title] Acta chirurgica Belgica

[ISO-abbreviation] Acta Chir. Belg.

[Language] eng

[Publication-type] Case Reports; Journal Article

[Publication-country] Belgium

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Pathology of thymic tumors.

As the thymus is composed of heterogeneous admixture of lymphoid and epithelial elements, tumors originating in the thymus may be of varied histologic types.

Thymomas are the most common thymic tumor in adults.

In addition to histologic subtype, tumor stage and resection status are important factors in determining outcome in thymomas.

Thymic lymphomas typically occur in younger patients than thymomas.

The most common thymic lymphomas are precursor T-lymphoblastic lymphoma, Hodgkin lymphoma, and primary mediastinal large B-cell lymphoma.

Thorough histologic sampling and, in some cases, the appropriate use of ancillary studies such as immunohistochemistry, flow cytometry, and molecular studies, are important in proper pathologic evaluation of thymic tumors.

[MeSH-major] Carcinoma / pathology. Hodgkin Disease / pathology. Thymoma / pathology. Thymus Gland / pathology. Thymus Neoplasms / classification. Thymus Neoplasms / pathology

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(PMID = 16104355.001).

[ISSN] 1043-0679

[Journal-full-title] Seminars in thoracic and cardiovascular surgery

[ISO-abbreviation] Semin. Thorac. Cardiovasc. Surg.

[Language] eng

[Publication-type] Comparative Study; Journal Article; Review

[Publication-country] United States

[Number-of-references] 69

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Large B-cell lymphoma with Hodgkin's features.

AIMS: To describe the features of a series of nine cases of diffuse large B-cell lymphoma (DLBCL) showing morphological and immunophenotypic features that are intermediate with Hodgkin's lymphoma (HL).

METHODS AND RESULTS: Most cases (6/9) presented as mediastinal tumours affecting young males, while the other three cases arose in extramediastinal locations.

Histopathologically, tumours showed diffuse large cell areas in a polymorphous background, with pleomorphic cytology and the common presence of Hodgkin's and Reed-Sternberg cells.

Immunophenotypically, tumours shared features of DLBCL and classical HL, with expression of CD30, CD15 (6/9), and a full B-cell profile including CD45RB, CD20, CD79a and OCT2.

CONCLUSIONS: These findings suggest that DLBCLs with HL features constitute a distinctive subgroup of aggressive lymphomas whose neoplastic growth and peculiar characteristics could be facilitated by a particular microenvironment found in the mediastinum.

[MeSH-major] Hodgkin Disease / pathology. Lymphoma, B-Cell / pathology. Lymphoma, Large B-Cell, Diffuse / pathology

[MeSH-minor] Adult. Aged. Antigens, CD / analysis. DNA-Binding Proteins / analysis. DNA-Binding Proteins / genetics. Diagnosis, Differential. Female. Gene Rearrangement. Humans. Immunohistochemistry. In Situ Hybridization, Fluorescence. Ki-67 Antigen / analysis. Male. Middle Aged. Mutation. Neoplasm Staging. Proto-Oncogene Proteins / analysis. Proto-Oncogene Proteins / genetics. Proto-Oncogene Proteins c-bcl-2 / analysis. Proto-Oncogene Proteins c-bcl-6. Transcription Factors / analysis. Transcription Factors / genetics. Tumor Suppressor Protein p53 / analysis. Tumor Suppressor Protein p53 / genetics

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(PMID = 15982329.001).

[ISSN] 0309-0167

[Journal-full-title] Histopathology

[ISO-abbreviation] Histopathology

[Language] eng

[Publication-type] Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] England

[Chemical-registry-number] 0 / Antigens, CD; 0 / DNA-Binding Proteins; 0 / Ki-67 Antigen; 0 / Proto-Oncogene Proteins; 0 / Proto-Oncogene Proteins c-bcl-2; 0 / Proto-Oncogene Proteins c-bcl-6; 0 / Transcription Factors; 0 / Tumor Suppressor Protein p53

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Diagnostic accuracy of image-guided percutaneous fine needle aspiration biopsy of the mediastinum.

Interpreting a fine needle aspiration biopsy (FNAB) from the mediastinum is challenging as this location may harbor many lesions, including primary and metastatic tumors.

The aim of this study was to determine the diagnostic accuracy of FNAB performed percutaneously for evaluating mediastinal lesions.A retrospective study of 157 consecutive CT-guided transthoracic FNAB of the mediastinum was performed (1988-2004).

Direct smears (N = 145; average 13 slides/case), ThinPrep slides (N = 25), and adequate cell blocks (N = 131) were prepared from procured cytologic material.

A definitive diagnosis was rendered in 128 (82%) cases.

Primary neoplasms (N = 38) included 24 lymphomas (6 Hodgkin and 18 non-Hodgkin), 7 thymomas, 1 thymic carcinoma, and 6 peripheral nerve sheath tumors.

There were 4 non-neoplastic lesions (1 granulomatous process; 2 bronchogenic and 1 pericardial cyst), 1 case of undifferentiated malignant large cell neoplasm, 13 cases negative for malignancy, and 29 (18%) that were indeterminate, due largely to insufficient cellularity.

There were 6 discordant cases, including 5 FNAB that were of adequate cellularity but interpreted as negative for malignant cells (on subsequent histology 2 turned out to be Hodgkin lymphoma, 2 carcinomas, and 1 diffuse large cell lymphoma), and 1 diagnosed as thymoma that on histologic evaluation was a thymic large cell lymphoma.

Adequate diagnostic cytologic material was obtained by image-guided percutaneous FNAB of mediastinal lesions in 82% of our cases.

Sufficient material was available to make cell blocks and perform ancillary studies when necessary.

These data also show a high proportion of agreement (78%) between FNAB and subsequent histologic diagnoses for a wide variety of mediastinal lesions.

The majority of discordant cases were primarily interpretive, with a final cytologic diagnosis negative for malignancy.

Only one problematic case misdiagnosed on FNAB as thymoma was found on subsequent surgical excision to be a thymic large B cell lymphoma.

Therefore, percutaneous FNAB of the mediastinum is a diagnostically helpful, minimally invasive procedure that can be performed in patients of all ages as part of the evaluation of a mediastinal mass lesion.

[MeSH-major] Biopsy, Fine-Needle. Mediastinal Neoplasms / diagnosis. Mediastinum / pathology. Surgery, Computer-Assisted

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[Copyright] (c) 2007 Wiley-Liss, Inc.

(PMID = 17924408.001).

[ISSN] 8755-1039

[Journal-full-title] Diagnostic cytopathology

[ISO-abbreviation] Diagn. Cytopathol.

[Language] eng

[Publication-type] Evaluation Studies; Journal Article

[Publication-country] United States

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] MAL is expressed in a subset of Hodgkin lymphoma and identifies a population of patients with poor prognosis.

Classical Hodgkin lymphoma (cHL) and mediastinal (thymic) large B-cell lymphoma (MLBL) have clinical, histopathologic, and molecular genetic similarities.

Expression correlated with nodular sclerosis subtype, and within this subtype, with grade 2 histology.

[MeSH-major] Hodgkin Disease / diagnosis. Hodgkin Disease / metabolism. Membrane Transport Proteins / metabolism. Myelin Proteins / metabolism. Proteolipids / metabolism

[MeSH-minor] Adult. Biomarkers, Tumor / metabolism. Combined Modality Therapy. Disease-Free Survival. Female. Humans. Immunohistochemistry. Lymphoma, B-Cell / diagnosis. Lymphoma, B-Cell / metabolism. Lymphoma, B-Cell / therapy. Lymphoma, Large B-Cell, Diffuse / diagnosis. Lymphoma, Large B-Cell, Diffuse / metabolism. Lymphoma, Large B-Cell, Diffuse / therapy. Male. Mediastinal Neoplasms / diagnosis. Mediastinal Neoplasms / metabolism. Mediastinal Neoplasms / therapy. Middle Aged. Myelin and Lymphocyte-Associated Proteolipid Proteins. Neoplasm Staging. Survival Rate. Tissue Array Analysis

Genetic Alliance. consumer health - Hodgkin lymphoma.

MedlinePlus Health Information. consumer health - Hodgkin Disease.

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(PMID = 16707382.001).

[ISSN] 0002-9173

[Journal-full-title] American journal of clinical pathology

[ISO-abbreviation] Am. J. Clin. Pathol.

[Language] eng

[Publication-type] Journal Article

[Publication-country] United States

[Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / MAL protein, human; 0 / Membrane Transport Proteins; 0 / Myelin Proteins; 0 / Myelin and Lymphocyte-Associated Proteolipid Proteins; 0 / Proteolipids

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Gains of REL in primary mediastinal B-cell lymphoma coincide with nuclear accumulation of REL protein.

Gains or amplifications of the REL locus are frequently seen in primary mediastinal B-cell lymphoma (PMBL).

In classical Hodgkin's lymphoma, genomic overrepresentation of REL correlated with nuclear REL protein accumulation.

To investigate the correlation between REL gene copies and its RNA and protein expression in PMBL, we analyzed genomic, transcriptional, and protein levels in 20 PMBLs and the PMBL derived cell lines MedB-1 and Karpas1106P.

We found gains/amplifications in 75% of the PMBLs by fluorescence in situ hybridization (FISH) and genomic REL overrepresentation in the PMBL lines.

Three of the five PMBLs with amplifications displayed elevated REL transcripts, while only 3/10 PMBLs with gains showed increased REL transcripts by real-time PCR.

One PMBL without gains displayed increased REL transcription.

REL protein expression exhibited a variable pattern across the PMBLs except for a single case that was completely negative by immunohistochemistry despite having gained REL.

Although transcript levels were generally low and nuclear REL staining was weak in the lymphoma cell lines, these nevertheless exhibited high NF-kappaB activation.

In conclusion, the frequent genomic overrepresentation of REL in PMBL does not necessarily trigger an increased transcription/translation of REL.

However, combined genomic and protein analysis revealed a significant association of gained REL and nuclear REL accumulation at the single cell level.

[MeSH-major] Cell Nucleus / metabolism. Lymphoma, B-Cell / metabolism. Mediastinal Neoplasms / metabolism. Proto-Oncogene Proteins c-rel / metabolism

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[Copyright] (c) 2007 Wiley-Liss, Inc.

(PMID = 17243160.001).

[ISSN] 1045-2257

[Journal-full-title] Genes, chromosomes & cancer

[ISO-abbreviation] Genes Chromosomes Cancer

[Language] eng

[Grant] United Kingdom / Medical Research Council / / MC/ U132670597

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / Proto-Oncogene Proteins c-rel

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Surgical approach for histopathological determination of anterior mediastinal malignant lymphoma].

In a retrospective review of all patients who admitted our hospital between January 1992 and December 2006, we identified 9 with anterior mediastinal malignant lymphoma.

They represented 6.8% of the 133 patients with mediastinal tumor.

Histology revealed 3 cases of primary mediastinal large B-cell lymphoma, 2 of Hodgkin lymphoma, 2 of precursor T-lymphoblastic lymphoma and 2 of thymic extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) lymphoma.

Careful attention should be paid to the relatively high incidence of malignant lymphoma in the anterior mediastinal tumors.

It is highly important to differentiate of malignant lymphoma from other diseases that shape anterior mediastinal tumor to avoid unnecessary operation.

Early and accurate diagnosis of these tumors is also important because some of these patients require immediate treatment by hematology specialists.

[MeSH-major] Lymphoma / pathology. Mediastinal Neoplasms / pathology

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(PMID = 18697455.001).

[ISSN] 0021-5252

[Journal-full-title] Kyobu geka. The Japanese journal of thoracic surgery

[ISO-abbreviation] Kyobu Geka

[Language] jpn

[Publication-type] English Abstract; Journal Article

[Publication-country] Japan

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Downregulation of Bfl-1 protein expression sensitizes malignant B cells to apoptosis.

Elevated expression of the antiapoptotic protein Bfl-1 (A1) was previously reported in several cancer cell lines.

Recently, molecular profiling of large B-cell lymphoma identified Bfl-1 as a gene signature in 'OxPhos' diffuse large B-cell lymphoma subtype and in primary mediastinal large B-cell lymphoma, suggesting that in addition to Bcl-2, Bcl-xL and Mcl-1, Bfl-1 may be a relevant target in the design of new strategies for cancer therapy.

Using short hairpin RNA strategy, we show here that Bfl-1 silencing in one lymphoblastoid B-cell line and in two diffuse large B-cell lymphoma cell lines potently induces their apoptosis and sensitizes those cell lines to anti-CD20 (Rituximab)-mediated cell death as well as to apoptosis induced by chemotherapeutic molecules such as doxorubicin, vincristine, cisplatin and fludarabine.

These results demonstrate for the first time that Bfl-1 is an essential protein for survival of malignant B cells and suggest Bfl-1 may represent a potential target for future drug development against B cell lymphoma.

[MeSH-major] Apoptosis / drug effects. Drug Resistance, Neoplasm. Gene Expression Regulation, Neoplastic / physiology. Lymphoma, B-Cell / pathology. Proto-Oncogene Proteins c-bcl-2 / genetics

Hazardous Substances Data Bank. CIS-DIAMINEDICHLOROPLATINUM .

Hazardous Substances Data Bank. RITUXIMAB .

Hazardous Substances Data Bank. FLUDARABINE .

Hazardous Substances Data Bank. DOXORUBICIN .

Hazardous Substances Data Bank. VIDARABINE .

Hazardous Substances Data Bank. VINCRISTINE .

NCI CPTC Antibody Characterization Program. NCI CPTC Antibody Characterization Program .

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(PMID = 17353899.001).

[ISSN] 0950-9232

[Journal-full-title] Oncogene

[ISO-abbreviation] Oncogene

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] England

[Chemical-registry-number] 0 / Antibodies, Monoclonal; 0 / Antibodies, Monoclonal, Murine-Derived; 0 / Antineoplastic Agents; 0 / BCL2-related protein A1; 0 / Proto-Oncogene Proteins c-bcl-2; 0 / RNA, Small Interfering; 4F4X42SYQ6 / Rituximab; 5J49Q6B70F / Vincristine; 80168379AG / Doxorubicin; EC 3.4.22.- / Caspases; FA2DM6879K / Vidarabine; P2K93U8740 / fludarabine; Q20Q21Q62J / Cisplatin

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] [Diffuse large B-cell lymphoma with primary involvement of mediastinal lymph nodes: diagnosis and treatment].

AIM: To diagnose diffuse large B-cell lymphosarcoma (DLBCLS) with primary involvement of the mediastinal lymph nodes (LN) and to evaluate the efficiency of aggressive polychemotherapy (PCT).

There were no signs of involvement of extranodal organs at the moment of diagnosis.

All the 15 patients received PCT according to the modified NHL-BFM-90 program: 4 to 6 courses depending on the response to the therapy; 10 (66.6%) and 5 (33.3%) patients had 4 and 6 courses, respectively; for consolidating purpose, 11 (78.5%) patients were prescribed radiotherapy applied to the mediastinum in a cumulative dose of 36 Gy due to the fact that they had a residual mass.

Primary PCT resistance was confirmed in one case.

CONCLUSION: DLBCLS with primary LN involvement is an individual nosological entity to be differentiated from primary mediastinal large B-cell lymphosarcoma.

[MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Lymph Nodes. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis. Mediastinum

[MeSH-minor] Adolescent. Adult. Aged. Antigens, CD / immunology. Diagnosis, Differential. Disease-Free Survival. Female. Humans. Male. Middle Aged. Neoplasm Staging. Young Adult

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(PMID = 20853612.001).

[ISSN] 0040-3660

[Journal-full-title] Terapevticheskiĭ arkhiv

[ISO-abbreviation] Ter. Arkh.

[Language] rus

[Publication-type] Clinical Trial; English Abstract; Journal Article

[Publication-country] Russia (Federation)

[Chemical-registry-number] 0 / Antigens, CD

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Distinguishing of primary mediastinal B-cell lymphoma and diffuse large B-cell lymphoma using real-time quantitative polymerase chain reaction.

Primary mediastinal B-cell lymphoma (PMBL) seems to be reliably distinguished from diffuse large B-cell lymphoma (DLBCL) with microarray technology.

We measured expression of Fcer2, Pdl2 and Blk genes using real-time quantitative polymerase chain reaction (RTqPCR) on formalin fixed, paraffin embedded material (FFPE) and suggested a formula to discriminate PMBL from DLBCL.

For 39/82 included patients the diagnosis of PMBL was expected clinico-pathologically.

Diagnosis of 10/39 and 2/43 of clinically considered PMBLs and DLBCLs, respectively, was not genetically confirmed.

Compared to confirmed PMBLs, unconfirmed ones showed clinical features similar to DLBCLs, e.g. spleen infiltration (p=0,028) and decreased invasiveness in pericardium (p=0,045).

There were no immunohistochemical differences between genetically confirmed and unconfirmed PMBLs.

New approach of distinguishing PMBL and DLBCL is presented.

[MeSH-major] Lymphoma, B-Cell / diagnosis. Lymphoma, Large B-Cell, Diffuse / diagnosis. Mediastinal Neoplasms / diagnosis. Polymerase Chain Reaction / methods

[MeSH-minor] Adult. Diagnosis, Differential. Female. Humans. Immunohistochemistry. Male. Middle Aged

Genetic Alliance. consumer health - Large B cell diffuse lymphoma.

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(PMID = 20568899.001).

[ISSN] 0028-2685

[Journal-full-title] Neoplasma

[ISO-abbreviation] Neoplasma

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't

[Publication-country] Slovakia

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] B-cell lymphomas with features intermediate between distinct pathologic entities. From pathogenesis to pathology.

Published in September 2008, the updated World Health Organization Classification of Tumors of Hematopoietic and Lymphoid Tissues introduces provisional borderline categories for lymphoma cases that demonstrate overlapping clinical, morphological, and/or immunophenotypic features between well-established entities.

These overlapping features pose real diagnostic challenges especially in identifying atypical cases of diffuse large B-cell lymphoma, Hodgkin lymphoma, and Burkitt lymphoma.

Lymphoma cases showing borderline features between T-cell/histiocyte-rich large B-cell lymphoma and nodular lymphocyte predominant Hodgkin lymphoma are not included within the borderline categories provisionally recognized by the updated classification.

Within the borderline categories, there are cases combining features of primary mediastinal large B-cell lymphoma and classical Hodgkin lymphoma.

Many of these cases resemble classical Hodgkin lymphoma but have a large number of tumor cells expressing CD20, CD45, and B-cell transcription factors.

Alternatively, these cases may resemble primary mediastinal large B-cell lymphoma but contain tumor cells resembling Reed-Sternberg cells and displaying an aberrant phenotype such as CD20(-), CD15(-/+) CD45(+), CD30(+), Pax5(+), OCT2(+/-), and BOB1(+/-).

Another new borderline category defining B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and Burkitt lymphoma, represents a biologically heterogeneous group.

Cases with morphologic features intermediate and with CD10/BCL6 coexpression should be placed in diffuse large B-cell lymphoma/Burkitt lymphoma category if tumor cells also show strong BCL2 staining and/or a Ki67 proliferation index of less than 90%.

When MYC rearrangements are present in these cases, the lymphomas often have atypical features, including concurrent rearrangements of BCL2 and/or BCL6 genes (so-called double/triple-hit lymphomas) and more aggressive behavior.

[MeSH-major] Lymphoma, B-Cell / pathology

Genetic Alliance. consumer health - B-Cell Lymphomas.

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[Copyright] Copyright 2010 Elsevier Inc. All rights reserved.

(PMID = 20398809.001).

[ISSN] 1532-8392

[Journal-full-title] Human pathology

[ISO-abbreviation] Hum. Pathol.

[Language] eng

[Publication-type] Journal Article; Research Support, Non-U.S. Gov't; Review

[Publication-country] United States

[Number-of-references] 61

   

[Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.

[Title] Recurrent mutations of the STAT6 DNA binding domain in primary mediastinal B-cell lymphoma.

Primary mediastinal B-cell lymphoma (PMBL) is a separate entity of aggressive B-cell lymphoma, characterized by a constitutive activation of janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling pathway, also observed in Hodgkin lymphoma.

Here, we show that MedB-1 PMBL-derived and L1236 Hodgkin-derived cell lines and 20 of 55 (36%) PMBL cases harbor heterozygous missense mutations in STAT6 DNA binding domain, whereas no mutation was found in 25 diffuse large B-cell lymphoma samples.

The mutant STAT6 proteins showed a decreased DNA binding ability in transfected HEK cells, but no decrease in expression of STAT6 canonical target genes was observed in PMBL cases with a mutated STAT6 gene.

Although the oncogenic properties of STAT6 mutant proteins remain to be determined, their recurrent selection in PMBL strongly argues for their involvement in the pathogenesis of this aggressive B-cell lymphoma.

[MeSH-major] Gene Expression Regulation, Neoplastic / genetics. Lymphoma, Large B-Cell, Diffuse / genetics. Mediastinal Neoplasms / genetics. Mutation / genetics. Neoplasm Proteins / genetics. STAT6 Transcription Factor / genetics

[MeSH-minor] Cell Line, Tumor. Female. Humans. Male. Protein Structure, Tertiary / genetics. Signal Transduction / genetics

HAL archives ouvertes. Full text from .

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(PMID = 19423726.001).

[ISSN] 1528-0020

[Journal-full-title] Blood

[ISO-abbreviation] Blood

[Language] eng

[Publication-type] Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't

[Publication-country] United States

[Chemical-registry-number] 0 / Neoplasm Proteins; 0 / STAT6 Transcription Factor; 0 / STAT6 protein, human

[Other-IDs] NLM/ HALMS411059; NLM/ PMC2824656