肝嚢胞性腫瘍の2切除例

We report two cases of cystadenoma and cystadenocarcinoma of the liver. Case 1 : A 38-yearold woman, complaining of discomfort of upper abdomen, was detected a cystic tumor in segment 5of the liver by abdominal CT scan. A part of the tumor had an enhanced lesion the angiographyshowed an enhanced peripheral staining of the cystic lesion. S 5-6 segmentectomy was performed.The resected material showed that the tumor was a multilocular and cystic lesion, histopathologicallywas diagnosed as hepatobiliary cystadenoma. Case 2 : A 72-year old man was incidentallypointed out a liver tumor in the left lobe at an examination of pneumonia. Abdominal CT scanshowed a papillary enhanced solid lesion in cystic tumor with invasion to the caudate lobe. ERCPshowed a filling defect in the common bile duct. Extended left hepatic lobectomy, caudate lobectomyand extrahepatic bile duct resection were performed. The final diagnosis was hepatobiliarycystadenocarcinoma.Cystadenoma is known to have a carcinogenic potential. In the case with suspition of neoplasticcyst, resection must be perfomed.