%0 Journal Article
%T Epstein
%A Amy Starr
%A Bhaskar Kallakury
%A Dong Hyang Kwon
%J International Journal of Surgical Pathology
%@ 1940-2465
%D 2019
%R 10.1177/1066896918784669
%X Diffuse large B-cell lymphoma (DLBCL) is characterized by medium- to large-sized neoplastic cells that express a wide range of B-cell markers including CD19, CD20, CD22, and CD79a. Also, as this is a hematopoietic malignancy, there is expression of the leukocyte common antigen CD45. Lack of CD20 expression occurs in a specific rare heterogeneous subgroup of DLBCL including primary effusion lymphoma, plasmablastic lymphoma, ALK-positive large B-cell lymphoma, and large B-cell lymphoma arising in HHV8+ multicentric Castleman disease. In this article, we report a rare case of CD20- and CD45-negative Epstein-Barr virus¨Cpositive DLBCL in which the entities listed above were ruled out, thereby posing a significant diagnostic challenge. Arriving at the correct diagnosis of Epstein-Barr virus¨Cpositive DLBCL was supported by immunoreactivity for the B-cell transcription factor Oct-2 and the pan-B cell marker CD79a
%K lymphoma
%K DLBCL
%K CD20 negative
%K CD45 negative
%K EBV
%U https://journals.sagepub.com/doi/full/10.1177/1066896918784669