Application of Endoscopic Submucosal Dissection for Removal of Deep Invasive Submucosal Colon Carcinoma

Figure 1

Conventional view of a 0-$\text{IIa}+\text{IIc}$ lesion located in the rectosigmoid colon. A definite depressed margin and irregular reddened surface of depression suggested submucosal deep invasion.