2.6.3. Conventional ESD procedure
A procedural endoscope will be inserted into the colon. After local injection around the lesion with a needle, mucosal incision and submucosal dissection will be repeated, with gravitational traction provided by a tip hood attached to the endoscope. Local injection into the submucosal layer with a needle or high-frequency knife will be performed when necessary. Submucosal dissection should excise the lesion without other traction devices.