Prevention and treatment of recurrence after endoscopic resection of large non-pedunculated colorectal polyps

Figure 1  Schematic diagram of different resection, recurrence prevention, and recurrence treatment techniques for large non-pedunculated colorectal polyps.

Figure 2 Snare-tip soft coagulation. A: Post-endoscopic mucosal resection (EMR) defect; B: Snare-tip soft coagulation (STSC); C: Post-EMR defect status post-STSC.

Figure 3 Hybrid-argon plasma coagulation. A: Thermal ablation of the margin of the defect using hybrid-argon plasma coagulation (h-APC); B: Thermal ablation of the base of the defect using h-APC; C: Resection defect after h-APC completed.

Figure 4 Margin marking. A: Snare tip used to mark around the lesion margin; B: Completed margin marking, pre-resection; C: Resection defect.