Fig. 3
From: Diagnosis of primary vitreoretinal lymphoma masquerading infectious retinitis by retinal biopsy
The cytospin preparation showed large, atypical lymphocytes (red arrows) with high nuclear/cytoplasmic ratio and irregular nuclear membranes. A few small benign lymphocytes are present (black arrow) in Diff Quick and Papanicolaou stains (A, B). Immunocytochemistry for CD20 and CD3 showed robust staining of atypical cells with CD20 (C) while small background lymphocytes were reactive with CD3 (D)