Fig. 3.
Sequence for the pocket-creation method (PCM) of colorectal endoscopic submucosal dissection 13 (see also Video 1). a An initial mucosal incision is made approximately 20 mm in length approximately 10 mm from the distal side of the tumor after submucosal injection. b, c Creation of a submucosal pocket under most of the tumor. d Opening the lower side of the pocket in a step-by-step manner toward the proximal side. e Dissection of the remaining area in the same manner. f Completion of the en bloc resection.