A novel countertraction-assisted technique facilitating endoscopic submucosal dissection of early gastric angle cancer without the use of a transparent hood.

The adoption of the transparent hood as an invisible assistant has promoted the technique of endoscopic submucosal dissection (ESD) and put it on the fast track to widespread use. However, the transparent hood may sacrifice part of the surgical view and often contributes to blurred visibility through the accumulation of dirty fluid and fogging. We have developed a countertraction-assisted technique for gastric ESD that is independent of the transparent hood ([Video 1]).