Abstract
Endoscopic mucosal resection (EMR) is a method for removing sessile or flat neoplasms confined to the superficial layers of the gastrointestinal tract. Injection of a saline or viscous agent into the submucosa prior to EMR is necessary. However repeated injections with exchange of needle accessories is time consuming. Furthermore, residual lesion rates can be as high as 46%, primarily due to piecemeal resection. The goal of this study was to compare two devices: a combined needle and snare unit (iSnare® system - hexagonal snare, US Endoscopy) versus an oval Snaremaster with spiral wire (Snaremaster, Olympus),and secondarily to compare non-viscous vs.
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