AbstractIn the investigation of 90 patients referred with severe post‐cholecystecomy problems, 8 patients were found at ERCP to have choledochoduodenal fistula. The clinical feature associated with the fistula included pain with fever, jaundice or hyperamylasaemia. Reviewing the details of the original surgery and the endoscopic findings, it is suggested that most, if not all, of these fistulas are iatrogenic. Treatment by biliary bypass is recommende