Incomplete resection of 4‒20 mm colorectal polyps when using cold snare and associated factors.

CSP for 4-9mm polyps is safe and feasible. However, for lesions ≥10mm, CSP failure occurs frequently, and IRR remains high even after technical success. Incomplete resection was associated with flat polyps, visual residual polyp, piecemeal resection, and difficult polypectomies.