Gas-free immersion system with dual-channel scope for rapid hemostasis during gastric endoscopic submucosal dissection

The usefulness of saline immersion for endoscopic submucosal dissection (ESD) has been reported [1] [2]. However, hemostasis is difficult to achieve during ESD performed under saline-immersed conditions. Therefore, we have previously reported a gas-free immersion (GFI) dissection technique that can achieve compression hemostasis on the side of a tapered hood without a hole while producing turbulence within the hood [3] [4]. In this report, we introduce a GFI system with a dual-channel scope (GIF-2TQ260M; Olympus) for rapid hemostasis during gastric ESD.