Аннотация:A 50-year-old gentleman with a 4 cm laterally spreading tumor of the sigmoid colon was referred to our institute for endoscopic resection. Biopsy of this lesion confirmed the presence of an adenomatous polyp with high-grade dysplasia. Based on the size and histology of the polyp, and in view of its location in the sigmoid colon, we opted to carry out underwater endoscopic mucosal resection (UEMR) [1]. This procedure was carried out with a high-definition narrowband endoscope (GIF-H190; Olympus Medical, Center Valley, PA, USA) equipped with a ClearPath cleaning device (Easy-Glide Ltd., Kfar Truman, Israel) to facilitate water irrigation and aspiration during the procedure. With the help of the ClearPath, the colon was rapidly irrigated with water, allowing piecemeal UEMR. All the polyp fragments, regardless of size, were aspirated through the ClearPath suction channel into the central suction canister ([Fig. 1], [Fig. 2]). The patient tolerated the procedure well with no adverse events recorded in the following days.
