[A case of synchronous gastric and hepatocellular carcinoma successfully treated by TS-1 and hepatic arterial infusion chemotherapy (HAI) of low-dose CDDP].

A 75-year-old man underwent distal gastrectomy for advanced gastric cancer with liver and lymph node metastases and synchronous hepatocellular carcinoma in April 2004. HAI with low-dose CDDP/TS-1 combination therapy was initiated after gastrectomy. Liver and lymph node metastases decreased significantly, with achievement of a partial response (PR) and a complete response (CR), respectively, and the hepatocellular carcinoma was reduced to 54.1% of its initial size after 3 sessions of this chemotherapy. These results suggested that combined chemotherapy with TS-1 and HAI with low-dose CDDP was not only useful for liver and lymph node metastases from gastric cancer, but for hepatocellular carcinoma as well.