Endoscopic anatomy of choledochoduodenostomy in relation to clinical observations.

Thirty patients having undergone choledochoduodenostomy for benign biliary diseases were studied by means of endoscopy. The endoscopic anatomy of the anastomosis was classified into two types. Inflammatory changes of the choledochal mucosa adjacent to the stoma were found in nine cases. Endoscopy of the proximal and distal (blind) segment of the common bile duct was accomplished in 19 and nine patients, respectively. It is very probable that these inflammatory mucosal changes could lead to complications.