[A case of advanced gastric cancer with histological complete response after S-1 chemotherapy]

A 58-year-old man of unresectable gastric cancer was treated with S-1 (120 mg/body/day) after gastrojejunostomy. After 5 courses of orally administration of S-1 for 4 weeks and withdrawal for 2 weeks, partial response (PR) was obtained clinically and distal gastrectomy was performed. The histological diagnosis showed no residue of carcinoma with both HE and immunohistochemical staining. The patient has been in good health and no recurrence has occurred for about 4 years and 4 months after resection.