Fine gastric mucosal pattern on gastric lesion

Abstract

The gastric mucosal surface was observed using the magnifying fiberscope (FGS-ML, GIF-HM), and the fine gastric mucosal patterns, which were even smaller than one unit of gastric area, were examined at a magnification of about 30 times, for the purpose of the study of localized gastric lesion. For simplification of these patterns, we newly classified them in the following way; A, AB, B, BC, C, CD, and D. Type A has only dotted gastric pits, and B has broken-liner depressed parts. C has striped continuous grooves, while D has rounded mesh-like grooves. AB, BC and CD are mixed patterns of A and B, B and C, and C and D, respectively. Besides, we classified subtypes in the following way; Cl (regular), C2 (rough), C3 (irregular), D1 (regular), D2 (slight-irregular) and D3 (high-irregular). The gastric hyperplastic polyp showed type BC or CD. ATP showed type C3. The gastric protruded carcinoma showed type C3, however, the gastric depressed carcinoma showed D3. The gastric ulcer showed CD, D1 and D2 depending on the stage. The gastric ulcer which had difficulty in healing showed type D. Therefore, differential diagnosis of these benign lesions and malignant lesions can be diagnosed by this method. In our series, many cancers were of the high-irregular type (C3, D3), and were easily differentiated from benign lesions. © 1980, Japan Gastroenterological Endoscopy Society. All rights reserved.