CT of intrahepatic cholangiocarcinoma

Six cases of mass producing intrahepatic cholangiocarcinoma including peripheral and hilar type, were reviewed. Dynamic CT was performed in all cases, and showed two different patterns. In 3 cases, there was no contrast-enhancement, but in the other 3 cases, the gradual increment of the density was noted. This latter pattern is different from that of hepatocellularcarcinoma, hemangioma, focal nodular hyperplasia, and metastasis. Although some cases of liver abscess can take the same pattern, and it was shown only in the half, we want to emphasize this as an important sign of cholangiocarcinoma. (author)