We retrospectively evaluated 473 patients with mucosal gastric cancer who underwent gastrectomy with lymph node dissection at Keio University Hospital from 1964 to 1994. These patients were deemed to be at low risk of lymph node metastasis if the lesions were identified as (1) isolated mucosal cancer, (2) pedunculated lesions <25 mm, or (3) sessible lesions <15 mm and Ul(−) [1, 2]. We excluded lesions located near the cardia or pylorus to avoid any stenosis or deformity. We did not exclude patients with a past history of preoperative surgery.
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