129-134-Mehmet Gumus.indd

Acinar cell tumors of the pancreas are uncommon and they include acinar cell carcinomas, acinar cell cystadenocarcinomas and acinar cell cystadenomas (ACCs) (1-5). These tumors are composed of typical round or cylindrical cells with eosinophilic periodic acid stain (PAS)positive cytoplasmic granules. On immunohistochemical analysis, they express pancreatic enzymes, and electron microscopy demonstrates that they contain zymogen granules (3). Acinar cell cystadenocarcinoma and ACC, which are both lined by acinar cells, are extremely rare tumors; moreover, ACC was an unknown lesion until year 2002. Acinar Cell Cystadenoma (Acinar Cystic Transformation) of the Pancreas: the Radiologic-Pathologic Features Mehmet Gumus, MD, Serdar Ugras, MD, Oktay Algin, MD, Haldun Gundogdu, MD Departments of Radiology, and General Surgery, Ataturk Training and Research Hospital, Ankara, Turkey; Department of Pathology, Selcuk University, Selcuklu Medical Faculty, Konya, Turkey