Abstract
We present a case of intrahepatic cholangiocarcinoma that gave rise to the formation of a huge livercyst mimicking the radiographic appearance of biliary cystoadenocarcinoma. A 81-year-old male was admitted on March 10 1997 because of a painful abdominal mass. Abdominal CT scan demonstrated a large lowattenuating mass in the left lobe of the liver. On a contrastenhanced CT, tha thick wall and papillary projection in the cystic lesion were poorly enhanced. We performed left hepatic lobectomy on the basis of a preoperative diagnosis of biliary cystoadenocarcinoma. The capsulated tumor, 82×78×72mm in size, was completely removed. Histological examination showed cholangiocarcinoma with a large cyst resulting from necrosis. Based on the radiographic findings and growth pattern, this case presents an unusual type of cholangiocarcinoma, resembling biliary cystoadenocarcinoma. It is nuclear whether suitable treatment and exact outcome in this case depended on the histological type and/or growth pattern. This question should be evaluated in the future.
