Acinar Cell Cystadenoma A Challenging Cytology Diagnosis, Facilitated By Moray (R) Micro-Forceps Biopsy

Acinar cell cystadenoma is a rare, benign cystic lesion of the pancreas. There have been only a few retrospective reports on its cytological features. We present the first case of acinar cell cystadenoma in a 65-year-old woman, diagnosed pre-operatively by pancreatic cyst fluid cytology and Moray (R) micro-forceps biopsy. We emphasize possible diagnostic pitfalls of acinar cell cystadenoma cyst fluid cytology and suggest useful morphologic, immunohistochemical, and other clues to aid in diagnosis. (C) 2017 Wiley Periodicals, Inc.