The patient, a 69-year-old man with esophageal cancer, had a type 2 tumor in the Mt region, accompanied with an ulcer measuring 12 cm in the major axis. In addition, lymph node metastasis, approximately 5x4 cm, was observed in the lesser curvature of the stomach. The clinical stage of the lesion was T3N1M0 (stage III), and simultaneous therapy combining radiotherapy (2 Gy/day) with chemotherapy employing CDDP (6 mg/day) and 5-FU (300 mg/day) was started on October 21, 1996. During treatment, tumor invasion into the gastric walls from lymph node metastasis was observed on endoscopy, and radiotherapy was discontinued at a total dose of 40 Gy to avoid the possibility of bleeding. Surgery was performed on January 8, 1997. Although tumor invasion from lymph node metastasis in the lesser curvature of the stomach was observed in the pancreas, no remaining cancer cells were noted in the primary nest and metastasized lymph node, suggesting the usefulness of the simultaneous combined therapy.