Sam K. Sharma, Takahiro Hiratsuka, Hisashi Hara, Jeffrey W. Milsom
Minimally Invasive New Technologies, Department of Surgery, Weill Cornell Medicine, New York Presbyterian Hospital, New York, NY

Complex colorectal polyps or those positioned in difficult anatomic locations are an endoscopic therapeutic challenge. Underwater endoscopic submucosal dissection (UESD) is a potential technical solution to facilitate efficient polyp removal. In addition, endoscopic tissue retraction has been confined to limited methods of varying efficacy and complexity. The aim of this study was to evaluate the efficiency of a unique UESD technique for removing complex polyps using double-balloon-assisted retraction (R).