Difficult colorectal polypectomy: Technical tips and recent advances

Figure 3 Endoscopic submucosal dissection with a scissor-type knife for a large subpedunculated polyp. A: After submucosal injection, a scissor-type knife could be used to perform mucosal incision; B: The tissue and vessels could be grasped between two blades and precoagulated before cutting; C: Final cut of the procedure; D: Mucosal defect after completed endoscopic submucosal dissection.