ENDOSCOPICAL EVALUATION OF DEPRESSED TYPE ADENOMA OF THE STOMACH

Abstract

We attempted to differentiate depressed type of gastric adenoma from depressed type of gastric carcinoma endoscopically. The material consisted of 14 depressed type adenomas, 7 depressed type carcinomas in adenomas and 41 intramucosal carcinomas (IIc type, well differentiated type). Endoscopic feature of depressed type adenoma was slight redness with the unclear demarcation surrounded by relatively rough and large nodules. The base of the depressed area was flat, and the marginal slope was gentle. Most important endoscopic f indisngs of gastric carcinoma were : (1) vivid redness or Slough in the lesion, (2) large and small nodules and/or flat structure in the base of depressed area, which could be demonstrated by dye scattering method. However, the complete discrimination between adenoma and carcinoma was difficult through endoscopic examination.