ENDOSCOPIC DIAGNOSIS OF EARLY GASTRIC CANCER WITH BENIGN APPEARANCE

Abstract

Between 1961 and 1983, 1207 cases of early gastric cancer were resected at our hospital. Out of 1207, 78 lesions (6.5%) showed benign appearance ; in which were included 8 cases of the type IIb (61.5%) and 6 cases of the type III+IIc (30.0%). Such cases have been increasing year by year. From April to October in 1984, 1775 lesions were biopsied. Out of 1775, 272 lesions were diagnosed as grade C (low suspicion) and 1644 lesions as grade D (benign) Fifty three lesions (19.5%) in grade C were diagnosed as malignancy by biopsic examinations. On the other hand, in grade D only 2 lesions (0.1%) were cancerous. All were depressed type with ulcerative change. With endoscopic Congo red-methylene blue test, cancerous lesions were observed as bleeched areas. Diagnostic accuracy of early gastric cancer by this method was superior to that by the routine endoscopic examination.