[A case of gastric cancer associated with synchronous liver metastasis successfully treated with combination therapy of systemic and hepatic arterial infusion chemotherapy].

A 56-year-old man who underwent distal gastrectomy at another hospital was admitted to our hospital because of advanced gastric cancer with synchronous liver metastasis. As we considered that the metastatic liver tumor was unresectable one, an intra-arterial catheter was inserted and weekly chemotherapy including methotrexate (MTX) (intra-venous) and 5-fluorouracil (5-FU) (intra-arterial) was started. The metastatic liver tumor was gradually reduced and resulted in partial response (PR) after 12 courses. Eight months later, the size of the metastatic liver tumor increased and lung metastasis occurred, so we started a new regimen of chemotherapy using CPT-11 (intra-venous) and CDDP (intra-arterial). After 4 courses of this regimen, we gained PR both in the metastatic liver and lung tumor. This case indicates that the combination therapy of systemic and hepatic arterial infusion chemotherapy is a treatment option in cases of advanced gastric cancer with liver metastasis.