More efficient endoscopic submucosal dissection with deep endotracheal intubation for superficial cervical esophageal carcinoma: a dual-center, prospective, randomized controlled study

Deeper endotracheal intubation (DET) were proposed to improve cervical esophageal endoscopic submucosal dissection (CE-ESD) due to the limited space and visibility. We aimed to evaluate the efficacy and safety of the DET.