GASTRIC CANCER CASES DISCOVERED IN GASTRIC MASS SURVEY

Abstract

Gastric cancer discovered in Gastric Mass Survey and diagnosed in the 1st Department of Internal Medicine, Gunma University during the 13 years from April 1962 to March 1975 were 212 cases (219 lesions) of early gastric cancer, and 256 cases (259 lesions) of advanced cancer.The gastric cancer are distributed as follows : 1) Frequency of the gastric cancer by age distribution has the peak in fourties to sixties in both sexes, and that of early gastric cancer is also prominent at this age group.2) The discovery rate of cancer in age grouping increases with aging and reaches to the peak at the age of seventies in both sexes ; the rate is 0.79% for male and 0.33% for female.3) The ratio of early gastric cancer to advanced cancer is 4 : 5 in all sujects. It should be noticed that relatively high incidence of early gastric cancer in mass survey.4) The prevalence of discovered gastric cancer in the mass survey could characterized as follows : (a) In the sixties of male subjects : protruding type of early gastric cancer, Borr. III advanced cancer and differentiated carcinoma were mostly localized in lower part of stomach.(b) In the fifties of female subjects : depressed type of early cancer, Bona advanced cancer and differentiated carcinoma were mostly found in mid-portion of stomach.(c) In the forties of female subjects : depressed early cancer (especially cancer IIc) Borr. IV advanced cancer and undifferentiated carcinoma were mostly localized in midportion of stomach.