Recently, the number of case reports detailing cancer recurrence in the pancreatic remnants, following surgical resection of intraductal papillary-mucinous carcinoma (IPMC) of the pancreas has increased. We report the case of a 74-year-old woman who underwent pancreatic resection twice in a 3-year period for primary IPMC and remnant pancreatic ductal carcinoma. We first performed distal pancreatectomy for branched IPMC in the pancreatic tail. Histopathological examination revealed invasive IPMC and the negative margin of the pancreatic duct. The expression of tumor markers gradually increased in the 2 years and 4 months after the initial surgery, and a tumor was detected in the remnant pancreas. We performed total remnant pancreatectomy. The recurrent tumor consisted of moderately differentiated adenocarcinoma. Currently, the patient is alive without recurrence for a year since the second resection. This experience suggests that careful surveillance is necessary for IPMC.