EBV-positive intravascular large B-cell lymphoma of the liver: a case report and literature review.

Diagnostic Pathology
Qingjiao LiJunpu Wang

Abstract

Intravascular large B-cell lymphoma (IVLBCL) is an extremely rare subtype of diffuse large B-cell lymphoma that most commonly involves the central nervous system, skin, and bone marrow. To our knowledge, Epstein-Barr virus (EBV)-positive IVLBCL in the liver has never been reported in the literature. We report a case of a 65-year-old Chinese man with complaint of fever for 18 days. No obvious abnormality was found by physical examination. Laboratory findings were notable for anemia, thrombocytopenia, and elevated level of serum lactate dehydrogenase. Bone marrow on smear, biopsy, and flow cytometry revealed no lymphoma. Imaging studies showed a slightly lower density lesion in the liver with high fluorodeoxyglucose uptake and hepatosplenomegaly. Percutaneous liver biopsy revealed clustering of large atypical lymphocytes within the hepatic sinusoids. Immunohistochemically, these lymphoma cells were positive for CD20, PAX-5, MUM-1, BCL-6 and CD5, but negative for CD3 and CD10. Besides, Epstein-Barr virus-encoded RNA was detected in tumor cells by in situ hybridization. BCL-2, BCL-6 and MYC genes were intact tested by fluorescence in situ hybridization analysis. The patient was diagnosed as IVLBCL and died after 1 month of hospital...Continue Reading

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Methods Mentioned

BETA
biopsy
flow cytometry
biopsies

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