[A case of Stage IV gastric cancer was successfully treated with multi combination chemotherapy with S-1].

Stage IV gastric cancer has poor prognosis, and median survival time (MST) is reported to range from 6 to 13 months. We report a case of long-term survival in a Stage IV gastric cancer patient who was successfully treated with multi combination chemotherapy with S-1. A 73-year-old woman presenting with gastric cancer with pyloric stenosis and peritoneal dissemination at the sigmoid colon underwent distal gastrectomy with D2 lymphadenectomy and sigmoidectomy.