The clinical outcome of the endoscopic submucosal dissection of colonic polyps larger than 20 mm. A single medical study.

Objective: The aim of this study was to evaluate the safety and efficacy of endoscopic submucosal dissection (ESD) of colonic polyps larger than 20 mm.

Material And Methods: Between March 2017 and July 2019, a gastro-entero endoscopist team resected 24 large colorectal polyps measuring 20-35 mm in diameter using the ESD technique. After the injection of a mixture of hydroxypropyl methylcellulose with dilute epinephrine and methylene blue into the submucosal layer, a circumferential incision was performed using an electrosurgical knife.