LAUSR

Underwater endoscopic mucosal resection (uEMR) is an injectionless form of EMR that allows intestinal adenomas to be safely resected without creating a submucosal cushion [1]. Proponents of uEMR cite safety and effectiveness of the technique, as well as speed and higher en bloc and R0 resection rates [2]. Furthermore, mucosal lesions contract underwater, facilitating en bloc capture of lesions larger than the snare opening [3]. Despite this, suboptimal en bloc resection rates (89%) have been reported among intermediate-sized (10–20mm) lesions, with even lower R0 resection rates (69%) [4]. This suggests that the snares used were too small, resulting in piecemeal or incomplete removal. We have developed a technique – progresE-Videos