[A Case of an Intraductal Papillary Mucinous Neoplasm Which Rapidly Worsened and Penetrated into the Stomach and the Transverse Colon].

We report a case of a 71-year-old woman.She visited our hospital with a complaint of high fever and abdominal distention. She has been pointed out intraductal papillary mucinous neoplasm(IPMN)4 years ago.Abdominal CT showed cystic legion, 80mm in diameter, on the pancreas.The lesion was unclear at the boundary between the main pancreatic duct and in contact with the stomach, transverse colon.Upper endoscopic and colonoscopic examination revealed the exhaustion image from the intestional tract but not pointed out the malignant findings.We performed total pancreatectomy, total gastrectomy and partial transverse colectomy.Pathological examination revealed the intraductal papillary mucinous carcinoma but the tumor did not invaded the stomach and colon.It is known that some cases of IPMN form fistulae to adjacent organs.We report a case of IPMN penetrating into the stomach and colon.