Histiocytoid Epstein-Barr virus-positive follicular lymphoma with large B transformation: a case report and review of literature.

Epstein-Barr virus-positive follicular lymphoma (EBV-positive FL) is extremely uncommon, especially a histiocytoid morphology. Here we present a 70-year-old man who had EBV-positive FL with diffuse large B-cell lymphoma (DLBCL) transformation in the left cervical lymph nodes.