Abstract
Some gastic elevated lesions diagnosed as group III by forceps biopsy are finally diagnosed as carcinoma by means of endoscopic gastric mucosal resection (EGMR). The purpose of this study is to clarify the difference between malignancy and benignancy of the endoscopic findings, especially the surface feature and color. EGMR was performed on 55 lesions of an elevated group III which had been diagnosed by forceps biopsy. According to the endoscopic findings, the surface feature of these lesions were classified into the following five types ; Type A, smooth (2 lesions) ; Type B, micronodular (18) ; Type C, nodular (16) ; Type D, division (8) ; Type E, depressed (11). The color was classified into three types : Type a, whitish (21 lesions) ; Type b, the same (32) ; Type c, reddish (2). As to the surface feature, 3 of 10 cancers were Type C, 3 were Type D and 4 were type E and none of Type A and B. As for the surface color, 7 of 10 cancers were Type b, 2 were Type c and 1 was Type a. Twenty of 45 atypical epithelial lesions were Type a and 25 were Type b. The both findings of the surface feature and color of these lesions were considered to be helpful for making the final diagnosis. As the conclusion, EGMR is a greatly useful method for the correct diagnosis of group III lesions which had been diagnosed by forceps biopsy.
