what is a mucinous neoplasm
From Wikipedia, the free encyclopedia. Intraductal papillary mucinous neoplasm (IPMN) is a type of tumor (neoplasm) that grows within the pancreatic ducts (intraductal) and is characterized by the production of thick fluid by the tumor cells (mucinous).ust as colon polyps can develop into colon cancer if left untreated, so too do some intraductal papillary mucinous neoplasms progress into an invasive pancreatic cancer.