How to Prevent Complications at ESD of Colorectal Lesions

For safe and reproducible endoscopic submucosal dissection (ESD) procedure, the appropriate dissection of the ramified vascular network in the level of the middle submucosal layer is required to reach the avascular stratum just above the muscle layer. The horizontal approach to maintain the appropriate depth for dissection beneath the vascular network enables treatment of difficult cases with large vessels and severe fibrosis. This article is part of an expert video encyclopedia.