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Related Experiment Videos

Nasal T-cell lymphoma

L M Weiss1, D A Arber, J G Strickler

  • 1Division of Pathology, City of Hope National Medical Center, Duarte, California.

Annals of Oncology : Official Journal of the European Society for Medical Oncology
|January 1, 1994
PubMed
Summary
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Nasal T-cell lymphomas, a rare cancer, are characterized by atypical T-cells and are linked to Epstein-Barr virus. These lymphomas are more common in Asia and affect adult males, with specific cell markers identified.

Area of Science:

  • Oncology
  • Hematology
  • Pathology

Background:

  • Nasal T-cell lymphomas encompass diverse lesions previously known as midline malignant reticulosis, lymphomatoid granulomatosis, and polymorphic reticulosis.
  • These lymphomas are rare in Western countries but prevalent in Asian populations, predominantly affecting adult males.
  • Histological examination reveals an angiocentric infiltrate of atypical cells.

Purpose of the Study:

  • To clarify the controversial classification of nasal T-cell lymphomas.
  • To characterize the immunophenotypic and genotypic features of these tumors.
  • To investigate the role of Epstein-Barr virus in the pathogenesis of nasal T-cell lymphomas.

Main Methods:

  • Immunohistochemistry to determine cell lineage and marker expression (CD2, CD45RO, CD43, CD56, CD16, CD57).

Related Experiment Videos

  • Gene rearrangement studies to analyze antigen receptor genes.
  • In situ hybridization to detect Epstein-Barr virus localization.

    • Main Results:

    • Neoplastic cells typically express T-cell markers (CD2, CD45RO, CD43) but may lack other pan-T-lineage markers.
    • Natural killer marker CD56 is often expressed, while CD16 and CD57 are usually absent.
    • Gene rearrangement studies showed a germline configuration in most cases, and Epstein-Barr virus was consistently detected in atypical cells.

    Conclusions:

    • Nasal T-cell lymphomas exhibit a distinct immunophenotype, often expressing CD56 and lacking other NK markers.
    • The consistent presence of Epstein-Barr virus in atypical cells suggests its involvement in the development of these lymphomas.
    • Further research is needed to fully elucidate the pathogenesis and classification of these rare malignancies.