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Diffuse large B-cell lymphoma with TEL/ETV6 translocation.

Deborah W Sevilla¹, Subhadra V Nandula, Adriana I Colovai

¹Department of Pathology, Columbia University, New York, NY 10032, USA.

Human Pathology

|November 11, 2008

Summary

This summary is machine-generated.

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Lymphoid Cells and Tissues

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...

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This study reports a rare case of diffuse large B-cell lymphoma with a complex karyotype, including a TEL gene rearrangement. This highlights the importance of cytogenetic analysis in diagnosing hematologic neoplasms.

Area of Science:

Hematology
Cytogenetics
Oncology

Background:

Cytogenetic abnormalities of chromosome 12p involving the TEL/ETV6 gene are common in various hematopoietic neoplasms.
While karyotypic aberrations of 12p are known in B-cell non-Hodgkin lymphoma, TEL rearrangements are infrequently reported.

Observation:

A case of diffuse large B-cell lymphoma with a complex karyotype, including t(9;12)(q22;p13) representing TEL rearrangement, is described.
Additional abnormalities included t(3;14)(q27;q32) affecting the BCL6 gene and del(6)(q13q23) leading to BLIMP1 loss.

Findings:

Fluorescence in situ hybridization confirmed the TEL gene rearrangement in the B-cell lymphoma.
The case demonstrates a rare association between B-cell non-Hodgkin lymphoma and TEL aberrations.

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Implications:

Accurate diagnosis of hematologic neoplasms requires correlating morphologic, phenotypic, and cytogenetic findings.
This case underscores the need for comprehensive cytogenetic analysis to detect rare genetic alterations.