抄録
Two casee of choledochal cyst accompanying multiple cystic dilatation of the intrahepatic bile ducts are reported. In one case, operative cholangiogram showed multiple cystic dilatation of the left intrahepatic bile duct with a stenosis at the hepatic hilus and diffuse dilatation of the right intrahepatic duct. Liver fibrosis was noted. The other case demonstrated multiple cystic dilatation of the bilateral intrahepatic bile ducts and high level of amylase in the bile juice. As to the cause of these findings, it is difficult to consider that extrahepatk bile duct dilatation has extended to the intrahepatic biliary system. The findings were similar to Caroli's disease, of which the etiologic factors are discussed. Long term follow up is stressed for the late complications such as cholangitis, intrahepatic cholelithiasis, portal hypertension or neoplasm.
