Combined Cholecystoenteric Fistula and Choledocholithiasis: A Report of a Rare Case.

Cholecystoenteric fistulas are a rare complication of chronic gallstone disease. If not diagnosed on time, they can cause several complications such as gallstone ileus, gastric outlet obstruction (Bouveret syndrome), cholangitis, or liver abscess. We present a case of a patient with chronic calculous cholecystitis, who was admitted due to unspecific abdominal discomfort and impaired liver function with increased cholestatic liver enzymes. We found a stone in the distal part of the common bile duct with the papilla orifice located in a duodenal diverticulum and a cholecystoduodenal fistula as an additional finding, which at that point was uncomplicated. After successful endoscopic therapy of the choledocholithiasis, the patient was referred for laparoscopic cholecystectomy and treatment of the fistula. During follow-up, the patient was in an excellent overall condition.