A resected case of multiple intraductal papillary mucinous tumors of the pancreas with US-guided ductal branch-oriented partial pancreatectomy.

A 69-year-old man with epigastralgia was admitted on August 26, 2002 and diagnosed with multiple intraductal papillary mucinous tumors by various imagings. The cystic tumor of pancreas head had a diameter of 2 cm, and the mural nodule of the cystic tumor measured only 3 mm. In the pancreas body the cystic tumor was measured at 1.5 cm with the mural nodule of the cystic tumor measuring 3 mm. It was believed that the tumors were benign. However, a mural nodule of the cystic lesion was recognized, thus, the possibility of malignancy could not be completely ruled out. The reduction operation for preservation of pancreatic parenchyma should be selected for these circumstances. Ductal branch-oriented partial pancreatectomy was performed on September 6, 2002 with intraoperative ultrasonography and a Cavitron Ultrasonic Aspirator, preserving the main pancreatic duct and normal pancreatic parenchyma. The operation was successful, and the histopathological diagnosis of the tumors was intraductal papillary adenoma of the pancreas.