Choledochocele: report of a case and review of the literatures.

A case of choledochocele seen in a 68-year-old male was reported. Analysis of fourteen cases reported under a variety of designations featuring cystic dilatation of the distal common bile duct protruding into the duodenal lumen and the case presented here disclosed that these cases could be classified into two types of pathology; both of the bile duct and the pancreatic duct opened into the cyst of the ampulla in 6 cases, whereas the bile duct and the pancreatic duct joined at the papilla of Vater and distal end of the bile duct formed a cystic dilatation protruding into the duodenal lumen in the remaining 9 cases.