Endoscopic submucosal dissection (ESD) is a minimally invasive procedure for the treatment of large tumors and has been used all over the globe. 1 However, colorectal ESD remains a challenging procedure because of its technical difficulty and the risk of perforation. Recently, the effectiveness of traction-assisted ESD has been re- ported, and there are various devices for applying counter- traction. 2-5 These reported devices permit traction for 1 point of the mucosa per device and are generally attached to the front mucosa of tumors. However, ESD for large colorectal tumors sometimes needs more traction; 1- point traction is usually not enough for both sides of large tumors during ESD.
展开▼
