[A case of distant metastasis from advanced gastric cancer treated with TS-1, which maintained NC (no change) for 9 months].

A 57-year-old woman was admitted to our hospital for advanced gastric cancer located in the gastric antrum. Abdominal CT scan revealed multiple liver metastases and lymph node metastasis along the abdominal aorta which was diagnosed as stage IV gastric cancer. The patient received daily oral administration of 75 mg TS-1, a novel oral anticancer agent. Each treatment course consisted of a four-week administration followed by two drug-free weeks. No change (NC) was observed in the liver metastasis on the abdominal CT scan after TS-1 administration, but lymph node swelling along the abdominal aorta decreased (PR). Grade 2 depilation was observed as the only adverse effect. The patient had a performance status of 1 or 2, and kept a fair QOL. TS-1 is an excellent new anticancer agent and, we have high expectations for its use in combined therapy with other drugs.