A 39-year-old man was admitted to the hospital because of epigastralgia. Abdominal ultrasound study and an abdominal computed tomography showed a whole-circumferential thickening of the wall and stones in the wall of the gallbladder. ERCP showed anomalous arrangement of the main pancreatic duct and common bile duct of non dilatation type. From these findings, a diagnosis of adenomyomatosis of the gallbladder associated with anomalous arrangement of the pancreaticobiliary duct was made. Because anomalous arragement of the pancreaticobiliary duct of non dilatation type has a risk of having carcinoma in the gallbladder, a laparoscopic cholecystectomy was performed. The histological findings of the resected gallbladder disclosed adenomyomatosis of generalized type and no carcinoma was involved in the specimen. Including this case, 11 cases of the adenomyomatosis of the gallbladder associated with anomalous arragement of the pancreaticobiliary duct have been repoted in the Japanese literature. There are four cases of dilatation type and seven cases of non dilatation type. In all four cases of dilatation type. cholecystectomy and resection of the extrahepatic bile duct with hepatico-jejunostomy were performed. In six out of the seven cases of non dilatation type, cholecystectomy was performed.