Feasibility and learning curve of unsupervised colorectal endoscopic submucosal hydrodissection at a Western Center.

Objectives: Colorectal endoscopic submucosal dissection (CR-ESD) is an evolving technique in Western countries. We aimed to determine the results of the untutored implementation of endoscopic submucosal hydrodissection for the treatment of complex colorectal polyps and establish the learning curve for this technique.

Methods: This study included data from 80 consecutive CR-ESDs performed by a single unsupervised western therapeutic endoscopist.