Cholangioscope combined with biliary forceps: a novel double-endoscope traction method for rectal endoscopic submucosal dissection

Endoscopic submucosal dissection (ESD) is a technically challenging procedure [1]. Inadequate visualization of submucosal tissue planes is one of the major technical challenges. Recently, traction devices to facilitate ESD procedures have attracted an increasing interest [2] [3]. Nevertheless, many traction methods are constrained by a fixed traction direction and force. Herein, we report a novel traction method—cholangioscope ([Fig. 1] a) combined with biliary forceps ([Fig. 1] b), which can flexibly adjust the traction direction and force.