A Case of EBV-Associated Blastic Lymphoplasmacytic Proliferation in an Esophageal Ulcer with a Self-Limiting Course: Overlapping Lesion between EBV Mucocutaneous Ulcer and Polymorphic Lymphoplasmacytic Disorder.

B cell lymphoproliferative disorders (LPD) of varied malignant potential occur in association with immunodeficiency and include among others, follicular hyperplasia, infectious mononucleosis-like hyperplasia, plasmacytic hyperplasia, polymorphic B-lymphoproliferative disorders and the recently described clinicopathologic entity named as EBV-positive mucocutaneous ulcer (EBV-MCU). EBV-MCU is a localized and usually self-limited EBV-associated LPD characterized by a circumscribed ulcer involving oropharyngeal mucosa, skin, or gastrointestinal tract reported most often in elderly patients with presumed age-associated immunodeficiency. Histologically, EBV-MCU is characterized by a polymorphous infiltrate, which frequently includes atypical large B cells with Hodgkin/Reed-Sternberg (HRS) like cells admixed with abundant reactive T cells usually forming a rim around the base of the lesion. This article is protected by copyright. All rights reserved.