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An Autopsy Case of Angioimmunoblastic T‐cell Lymphoma with a High Content of Epithelioid Cells in the Lymph Node: Immunohistochemical and Genomic Analyses
Author(s) -
Morita Kazumasa,
Matsumura Yumi,
Kudo Hitoshi,
Fujii Kimio,
Tachibana Takao,
Ohta Keiji,
Kamoto Toshiyuki,
Okamoto Hiroyuki,
Yamabe Hirohiko,
Imamura Sadao,
Fukumoto Manabu
Publication year - 1997
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/j.1346-8138.1997.tb02309.x
Subject(s) - pathology , lymphoma , lymph node , lymphatic system , biology , cd8 , lymph , immunostaining , gene rearrangement , immunohistochemistry , immunophenotyping , medicine , immunology , antigen , gene , biochemistry
A 79‐year‐old female developed red papulonodular eruptions on her extremities, facial erythema, generalized lymphadenopathy and high fever. Histopathology of an affected lymph node showed the features of angioimmunoblastic T‐cell lymphoma with a high content of epithelioid cells. She died about two years after the onset despite therapy. Genomic Southern blotting and immunostaining of the lymph nodes were performed twice. In August of 1993, Southern blotting did not show any rearrangement of the immunoglobulin or the T‐cell receptor (TCR) gene. Small or medium‐sized lymphoid cells were positive for CD4 or CD8 (CD4:CD8=2:1). However, in September of 1994 (at autopsy), rearrangements of TCR Cβ1, Jβ2 and Jγ genes were observed. Small or medium‐sized lymphoid cells were positive for CD4, but negative for CD8. Several large cells were positive for Latent Membrane Protein 1 (LMP1) of the Epstein‐Barr virus (EBV). Our results proved that selective oligoclonal proliferation of tumor cells (probably CD4+) accompanied the disease progress.