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Original

Composite EBV negative peripheral T-cell lymphoma and diffuse large B-cell lymphoma involving the ileum: A case report and a systematic review of the literature

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Pages 2208-2217 | Received 25 Jan 2006, Accepted 18 Apr 2006, Published online: 01 Jul 2009
 

Abstract

We report a case of an intestinal peripheral T-cell lymphoma (PTCL) with a concurrent diffuse large B-cell lymphoma (DLBL) involving the ileum and a regional lymph node. The patient presented with an abdominal mass. The terminal ileum showed a diffuse and monotonous population of small CD3-positive T cells. The T-cell receptor γ (TCRγ) gene was rearranged by PCR while the immunoglobulin heavy chain (IgH) gene was not. A separate section of the ileum showed a colliding large B-cell proliferation. The regional lymph node showed a diffuse proliferation of large centroblasts positive for CD20 and CD79a admixed with small T cells and showed a rearranged IgH receptor gene without evidence of a clonally rearranged TCRγ gene. Both the PTCL and DLBL components were negative for EBV. A review and analysis of the pertinent literature describing composite T- and B-cell lymphomas is performed and reported.

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