Fig. 2From: Diagnostic and therapeutic challenges of EBV-positive mucocutaneous ulcer: a case report and systematic review of the literatureBiopsy of right incisural ulcer and left palatal perimolar ulcer. Hematoxylin and eosin (H&E) stain demonstrating scattered large atypical lymphocytes with occasional Hodgkin Reed-Sternberg (HRS) morphology in a background of mixed inflammatory infiltrate. These large atypical cells are positive for CD30Back to article page