Congenital choledochal cyst. Analysis of 1,433 patients in the Japanese literature.

Five of the author's cases and 1,428 cases from Japan's literature are discussed. Half of the patients were infants. The ratio of men to women was 1 to 3. One hundred fifty-one patients had malformation of the pancreaticobiliary system, which is said to be a cause of congenital choledochal cyst. All of the patients have been followed up. Excision of the cyst is the best procedure for preventing ascending cholangitis and cystic cancer. Roux-Y hepaticojejunostomy is also effective for reconstruction of the bile duct because it rarely causes ascending cholangitis.