891565.fig.002a
(a)
891565.fig.002b
(b)
891565.fig.002c
(c)
891565.fig.002d
(d)
Figure 2: Procedure for colorectal ESD. (a) A large laterally spreading tumor-granular type is seen in the ascending colon. (b) Hyaluronic acid solution is injected into the submucosa, and the submucosal layer under the lesion is directly dissected from the underlying muscularis propria using lateral movement of the dual knife. (c) A huge artificial ulcer is created by ESD. (d) The 80 × 65 mm specimen is completely resected in one piece. ESD: endoscopic submucosal dissection.