Dual-channel endoscope for double-traction endoscopic device-assisted full-thickness resection of rectal superficial tumor

Endoscopic device-assisted full-thickness resection (EDFTR) with over-the-scope clip deployment is a novel technique for treating complex colorectal polyps, specifically nonlifting adenomas (recurrent or previously biopsied/tattooed) or early carcinomas [1]. For these lesions, EDFTR has demonstrated a high technical success rate, and a good efficacy and safety profile [2] [3]. The technical success of EDFTR may be hindered by lesions with significant fibrosis that cannot be adequately lifted even when using dedicated grasping forceps [1] [4].