There have been a few reports of polypoid type gastric cancer, followed up for more than 5 years. We recently experienced such a case. A 66 years old woman visited our hospital because of slight epigastric distress on March 1971. A small oval polypoid lesion was noted by gastroscopy and the biopsied specimens showed an atypical tubular structure suggesting cancer. She refused operation and was followed up. Roentgenologically the polypoid mass had not enlarged for the first 4 years, but for the following year did enlarge in its diameter. The 2nd biopsy was done on July 1976, revealing adenocarcinoma. She was operated on September 1976. Histological examination of the operated specimen showed moderately differentiated tubular adenocarcinoma, remaining in mucosal layer.
