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A look into the evolution of Epstein-Barr virus-induced lymphoproliferative disorders: a case study

A look into the evolution of Epstein-Barr virus-induced lymphoproliferative disorders: a case study

American Journal of Clinical Pathology 144(5): 817-822

Epstein-Barr virus (EBV)-induced lymphoproliferative disorders (LPDs) are lymphoid proliferations arising as a result of the loss of an effective EBV-specific cytotoxic T-cell response. LPDs may occur for primary or acquired impairment of the immune system, as well as in some persons without documented immunodeficiency. In this article, we describe the case of a human immunodeficiency virus-positive patient affected by an EBV-LPD of the stomach who developed a nodal diffuse large B-cell lymphoma with complex morphologic and molecular features. GeneScan analysis of the gastric specimen identified two different heavy-chain immunoglobulin gene (IGH) rearrangements characterized by a dominant peak of 285 base pairs (bp) in length and a smaller peak of 266 bp in length. In the lymph node sample, IGH evaluation also demonstrated two different peaks; however, the main peak corresponded to the minor peak detected in the EBV-LPD specimen at the diagnosis. In addition, a monoclonal immunoglobulin light chain gene (IGL) rearrangement was also found. We also demonstrated that the major peak in the stomach corresponded to the EBV-positive population observed in the histologic sections. This case may provide additional insights to better understanding the "hit-and-run" role for EBV in lymphomagenesis. However, we could not exclude that our findings represent the co-occurrence of two unrelated B-cell neoplasms rather than a progression from an EBV-positive neoplasm to an EBV-negative one.

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Accession: 057068226

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PMID: 26486748


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