Annular pancreas associated with congenital absence of the gallbladder.

The association of annular pancreas with biliary tract anomalies is extremely rare. A patient is reported with annular pancreas, congenital absence of the gallbladder, and dilation of the common bile duct. Surgical correction of the duodenal obstruction was performed and intraoperative cholangiography was done. Recovery was uneventful and long-term liver function remained normal.