Cholecystocolic fistula is rare of all internal biliary fistulae. Two patients with cholecystocolic fistula are presented. The first patient, a 77-year-old man, presented with pyrixia. Pneumobilia from the gallbladder to transverse colon was detected with an abdominal CT scan. Diagnosis of cholecys-tocolic fistula was made with an endoscopic retrograde cholangiopancreaticography (ERCP). At operation, a cholecystectomy and a partial resection of the transverse colon including the fistula were performed. The second patient, a 71-year old man, presented with upper abdominal discomfort. Pneumobilia of the intrahepatic duct was detected with an abdominal ultrasonography and an abdominal CT scan. Diagnosis of cholecystocolic fistula was made with ERCP. At operation, a cholecystectomy, a partial resection of the transverse colon including the fistula and an end to end anastomosis were performed.
In both cases, ERCP was useful for detecting the existence of the fistula. This disease would require cholecystectomy and resection of the wall of the colon including the fistula to attain a curative operation.