Abstract
Fifty-seven lesions (16 carcinomas and 41 adenomas) were evaluated for purpose of dignosis and treatment in 48 patients with depressed type lesions classified as type IIc and IIc+IIa (40 males and 8 females with a mean age of 62.2 years) .
The clues to cancer detection that were obtained in endoscopic study were redness, deformity, discoloration, and whitish coat. Redness was the most predominant sign, accounting for as much as 73.7% (43/57) of lesions detected. When the depressed lesions were classified into small depressed lesions of type A, dendritic lesions of type B, asteroid lesions of type C, wide irregular lesions of type D, and cylindroid lesions of type E, 20 lesions of type D were found to include 10 carcinomas, of which 3 were classified as carcinomas with submucosal invasion. On the other hand, 49 lesions were treated by endoscopic mucosal resection (EMR) .
The results suggest that carcinomas may be considered an indication for EMR if void of traits of submucosal invasive carcinomas, such as converging folds.
