Abstract
We report two resected cases of intrahepatic bile duct cystadenoma which produced mucin and communicated with the bile duct. Case 1 : A 79-year-old man was found by CT to have a cystic lesion and dilated intrahepatic bile ducts in the left lateral segment (S2) of the liver. Percutaneous transhepatic cholangiography showed filling defects in the bile duct from B2 to CBD, and partial resection of the liver was performed. Case 2 : A 73-year-old man was admitted for epigastric pain and fever. Laboratory studies showed liver dysfunction, and abdominal CT revealed a cystic lesion measuring 2.2 cm in diameter and slight dilatation of the left intrahepatic bile duct. We resected the left hepatic lobe. The pathological diagnoses of both resected tumors were intrahepatic bile duct cystadenoma. No mesenchymal stroma was observed in either case.
