1990 年 26 巻 5 号 p. 901-904
Congenital biliary dilatation is recognized as one of the anomalies of the bile duct. Our study was aimed at clarifying whether or not the unusual junction patterns of proximal (main) hepatic bile ducts are particularly common in this disease. The junction patterns of the proximal hepatic ducts were evaluated on 22 cases of congenital biliary dilatation. Unusual patterns were noted in 27.5%. This proportion is very similar to that seen in other diseases in adults. The unusual patterns appear more frequently in the fusiform type than in the cystic type cases of congenital biliary dilatation. There was one case in which the right hepatic duct joined directly with the cystic duct. Such unusual types do not appear so frequently in congenital biliary dilatation, but it is necessary to take care with the junction patterns of the proximal hepatic ducts during surgery.