Difficult colorectal polypectomy: Technical tips and recent advances

Figure 6 Endoscopic submucosal dissection for a polyp involving the anorectal junction. A: Endoscopic image showing a 6-cm laterally spreading tumor involving the dentate line; B: Retroflexed view of the same polyp; C: Hemorrhoidal plexus at the anus makes the endoscopic submucosal dissection (ESD) challenging with the bleeding risk; D: Mucosal defect after completed ESD.