1968 Volume 59 Issue 3 Pages 251-258_6
Thirty-three foci of primary carcinoma of the stomach, less than 5mm in the largest diameter and regarded as representing its incipient phase in development, were histologically examined, and the basis for their development was elucidated. Out of these materials, 28 foci (84.8%) arose from the epithelium of intestinal type, 4 foci (12.1%) from the ordinary mucosa, and one focus (3.0%) was ulcer-cancer. Appearance of these microcarcinomas is briefly described. The relationship of the metaplastic epithelium to carcinoma in the stomach is also discussed.