The records of 427 patients with gastric cancer have been reviewed and the various types of X-ray abnormalities produced by the tumor have been correlated with the clinical course following surgery. The 5-year survival rate for the entire series was 11 per cent. Patients with X-ray evidence of an ulcer of the pars media without a mass had superior follow-up results. The 5-year survival rate for cancer of the pars media with indeterminate X-ray findings, usually resembling benign ulcer, was 30 per cent.