Fig. 2
From: Fibrin-associated diffuse large B-cell lymphoma in a hemorrhagic cranial arachnoid cyst
Microscopic pathology. Islands of atypical blastic lymphoid cells are embedded in abundant fibrin (a). The cells are diffusely positive for CD20 (b), highly proliferative in the Mib-1 (c) stain and show strong positivity for BCL2 (d), IRF-4 (e) and EBV-associated RNA (f). Scale bars represent 30 μm