Underwater versus conventional endoscopic mucosal resection for small size non-pedunculated colorectal polyps: a randomized controlled trial: (UEMR vs. CEMR for small size non-pedunculated colorectal polyps)

摘要

Underwater endoscopic mucosal resection (UEMR). a A flat elevated polyp was detected in the colon; b The colorectal lumen was completed deflated with sterile water; c The polypectomy snare was used for UEMR; d Biopsies were obtained from two marginal sites located symmetrically to the left and right of mucosal defects to confirm residual polyp tissue