[A Case of Resection of a Huge Intrahepatic Cholangiocarcinoma of Extrahepatic Growth Type]

A 44-year-old woman was admitted to our hospital because of an abdominal mass. Blood examination showed no elevation of hepatic enzyme levels but did show a slight increase in the levels of tumor marker CA19-9. An abdominal contrastenhanced CT scan showed a large pedunculated tumor(15 cm)growing from the S5 to the extrahepatic area, with a pattern of earlyenhancement and wash out. Fortunately, organ invasion and tumor dissemination were not observed. Upon FDG-PET examination, marked uptake of FDG was observed in the tumor. S5 hepatic subsectionectomywas performed. The final pathological finding of this tumor was moderatelydifferentiated cholangiocarcinoma. Intrahepatic cholangiocarcinoma with exophytic growth is quite rare, and is reported to have a poor prognosis. Therefore, strict follow-up, including follow-up CT and examination for tumor markers(CA19-9 and CEA), is required.