Underwater endoscopic mucosal resection of large colorectal lesions.
In this prospective study, 11 consecutive patients with neoplastic colorectal lesions (median size 20 mm, range 15 - 25 mm) underwent endoscopic polyp removal by underwater endoscopic mucosal resection (EMR). Six lesions were removed en bloc and five lesions were removed by piecemeal resection. Pathological examination revealed seven R0 resections, and in four cases the pathology could not be dete
