Endoscopic submucosal dissection for a laterally spreading tumor involving the colon diverticulum using a knife with water supply function

摘要

Laterally spreading tumor (50 mm in diameter) located in the ascending colon and extending into a diverticulum located on the oral side of the tumor ( ). Colon diverticulum. Changing the postural position for better gravity in the submucosal space ( show defects in the muscle layer). Injecting water into the submucosal space using the knife’s water-supply function. Wound after endoscopic submucosal dissection without perforation. Complete closure of the defect in the muscle layer by using clips. , Resection specimen.