Repeat endoscopic submucosal dissection of esophageal squamous cell carcinoma near a previous scar by water pressure method

Repeat endoscopic submucosal dissection of esophageal squamous cell carcinoma near a previous scar by water pressure method Video 1 Successful repeat endoscopic submucosal dissection of an esophageal squamous cell carcinoma close to the previous ESD scar using the water pressure method. Fig. 1 a Using esophagogastroduodenoscopy, iodine staining revealed that the tumor spread to approximately 7/8th of the circumference of the esophageal lumen.b After injecting hyaluronic acid, a non-lifting sign was observed, owing to severe fibrosis.c The water pressure method improved the visibility of the appropriate dissection layer with buoyancy and natural magnification effect.d The water pressure method helped achieve en bloc resection without perforation.