A case report on a long-term surviving patient with advanced gastric cancer with supraclavicular lymph node metastasis treated by radiation and chemotherapy is presented. The Borrman type 2 of advanced gastric cancer was found on the greater curvature of the antrum at the first radiological examination. Radiation was administered to the supraclavicular lymph node at 60 Gy and to the stomach at 64 Gy. The patient received mitomycin C (24 mg) and Tegafur (230 g). After completion of the combined therapy the endoscopy revealed an irregular mucosal change with erosion and hemorrhage. Radiological examination revealed atrophic and hyperplastic areas throughout the stomach. These findings lasted more than six years. The patient died of unknown cause in February 1983. She had survived nine years and seven months after her initial diagnosis. Radiotherapy may play a role as a means of radical treatment in certain cases of advanced gastric cancer.