Pancreas, Mucinous cystic neoplasm, low grade

Mucinous cystic neoplasm is an important entity in the differential diagnosis of cystic lesions of the pancreas. Like intraductal papillary mucinous neoplasm (IPMN), it is a mucin-producing epithelial lesion which can harbor low grade, moderate, or severe dysplasia. It is distinguished from IPMN by the presence of ovarian type stroma and a lack of continuity with the main or side branch ducts of the pancreas. Mucinous cystic neoplasm represents approximately 2% of all exocrine pancreatic neoplasms, and shows a 9:1 female to male predominance, with an average age of 50 years at diagnosis. This case is an example of a mucinous cystic neoplasm with low grade dysplasia demonstrating the classic ovarian type stroma.