Cytology of necrotizing Warthin's tumor

Abstract

We cytologically compared 4 necrotizing Warthin's tumors with 16 typical tumors in order to clarify cytologic features of necrotizing Warthin's tumor. The cytologic features were as follows, 1. abundant necrotic epithelial cells and lymphocytes, 2. minimally cohesive oncocytic cells, 3. the presence of squamous cells, 4. predominant neutrophils or histiocytes in the background, and 5. the presence of hemosiderin or hematoidin. When typical oncecytes are not seen, mast cells, inspissated proteinacious globles and granular background are useful in diagnosing Warthin's tumor.