EBV-Positive Plasma Cell Neoplasm

Lessons From the Friday Unknowns

Histologic sections from dural and cranial mass, and cranial bone share similar morphologic features.

A plasma cell neoplasm is present that forms sheets and is composed of intermediate-size to large cells with eccentric mononuclei or multinuclei, vesicular chromatin, small nucleoli and moderate amount of eosinophilic…