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Related Experiment Videos

Gammadelta T-cell lymphomas.

Philippe Gaulard1, Karim Belhadj, Felix Reyes

  • 1Département de Pathologie, CHU Henri Mondor, Créteil, France.

Seminars in Hematology
|July 24, 2003
PubMed
Summary
This summary is machine-generated.

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Gammadelta T-cell lymphomas are rare but diverse. Hepatosplenic gammadelta T-cell lymphoma, a distinct subtype, is characterized by specific genetic abnormalities and a nonactivated cytotoxic phenotype.

Area of Science:

  • Oncology
  • Hematology
  • Immunology

Background:

  • T-cell lymphomas expressing the gammadelta T-cell receptor (TCR) are uncommon and present a wide clinicopathological spectrum.
  • Hepatosplenic gammadelta T-cell lymphoma is a recognized subtype, previously provisionally classified.
  • Normal gammadelta T cells predominantly reside in mucosal and skin sites.

Purpose of the Study:

  • To review the clinicopathological spectrum of gammadelta T-cell lymphomas.
  • To differentiate hepatosplenic gammadelta T-cell lymphoma from other gammadelta T-cell neoplasms.
  • To discuss the phenotype and cytogenetic features of these lymphomas.

Main Methods:

  • Review of existing literature and classifications (REAL, WHO).
  • Analysis of clinicopathological features, T-cell receptor phenotype, and cytogenetic abnormalities.

Related Experiment Videos

  • Comparison between hepatosplenic and non-hepatosplenic gammadelta T-cell lymphomas.

    • Main Results:

    • Hepatosplenic gammadelta T-cell lymphoma is characterized by nonactivated cytotoxic T cells and isochromosome 7q.
    • Non-hepatosplenic gammadelta T-cell lymphomas are heterogeneous, often occurring in skin/mucosa, with activated cytotoxic phenotypes.
    • The term "hepatosplenic T-cell lymphoma" is preferred in the current WHO classification.

    Conclusions:

    • Gammadelta T-cell lymphomas encompass a diverse group of neoplasms with distinct clinical and biological features.
    • Hepatosplenic gammadelta T-cell lymphoma represents a specific entity within this group.
    • Further research is needed to fully understand the heterogeneity and classification of non-hepatosplenic gammadelta T-cell lymphomas.