Successful endoscopic closure of a colonic perforation one day after endoscopic mucosal resection of a lesion in the transverse colon

Figure 1 Colonoscopy images when endoscopic mucosal resection was performed. A: An 18-mm slightly reddish elevated lesion was recognized on the transverse colon; B: Type 3L pit pattern was recognized with indigo was recognized; C: Endoscopic mucosal resection (EMR) was performed; D: There were no apparent findings that suggested perforation at the ulcer floor immediately after EMR.