JMA Journal

Figure 1. a. The 5 mm Is polyp was found in the transverse colon. b. the 30 mm submucosal tumor was found in the descending colon. c. the 5 mm Is polyp in the transverse colon was resected by CSP. d. ESD was then performed on the 30 mm submucosal tumor in the descending colon.

Figure 2. a. Computed tomography showed free air on the liver surface. b. We identified a 5 × 7 mm perforation in the transverse colon.

Figure 3. a. Pathological image of a transverse colon polyp is shown. The muscularis propria was not included (hematoxylin and eosin [H＆E] stain, ×40 and ×400). b. Pathological image of a descending colon in the submucosal tumor is shown. The muscularis propria was not included in either case (H＆E stain, ×40).