[A case of successful multimodal treatment for combined hepatocellular and cholangiocarcinoma with portal venous tumor thrombus].

We report a case of successful multimodal treatment for combined hepatocellular and cholangiocarcinoma with portal venous tumor thrombus. A 66-year-old man was diagnosed with hepatocellular carcinoma with Vp3 by abdominal enhanced CT. He underwent a complete tumor resection and following interferon and 5-FU combined intra-arterial chemotherapy as an adjuvant setting. The histological findings were consistent with combined hepatocellular and cholangiocarcinoma. At 9 months after the surgery, lymph node metastases were detected. Then we started an oral fluoropyrimidine anticancer agent S-1, because the recurrence was suspected to be originated from the cholangiocarcinoma component. Thereafter, sustained partial remission was achieved. In case of combined hepatocellular and cholangiocarcinoma, we need to create a treatment strategy against characteristics of both components.