[Cystic liver tumor resembling echinococcosis].

The hepatobiliary cytadenoma or -carcinoma is a cystic, multilocular, intrahepatic tumor in the liver affecting mainly middle-aged people. In most cases hepatobiliary cystadenomas or -carcinomas cannot be definitely differentiated by sonography and CT from other cystic lesions in the liver. Resection of the tumorous parts of the liver as early as possible is essential for the prognosis for the patients because malignant transformation of the lesions might occur.