Synchronous occurrence of gastrointestinal stromal tumor, pancreatic intraductal papillary mucinous neoplasm, and intrahepatic cholangiocarcinoma: Case report.

Rationale: Gastrointestinal stromal tumor (GIST) is the most common primary mesenchymal tumors in gastrointestinal tract. Synchronous occurrence of GIST and tumors in other organs is rare. We first report an exceedingly rare case of synchronous occurrence of gastric GIST, pancreatic intraductal papillary mucinous neoplasm (IPMN) and intrahepatic cholangiocarcinoma.