| [ Summary ] |
Recently, with the increasing westernization of life styles in Japan, the incidence of colorectal cancers has also been increasing. It is known that intramucosal carcinoma of the colon occurs without lymph node metastasis according to the reports of various investing ators. In the past, lesions targeted for this treatment were of the exophytic type. However, with recent advances in endoscopy and Kudo's achievement, depressed early colonic carcinoma's are often detected. Among the characteristic endoscopic features of depressed early colorectal carcinoma's are redness, fine granularity and defects of the innominate groove on the lesional surface. |