Risk Factors for Intraprocedural and Clinically Significant Delayed Bleeding After Wide- field Endoscopic Mucosal Resection of Large Colonic Lesions  Nicholas G. Burgess, Andrew J. Metz, Stephen J. Williams, Rajvinder Singh, William Tam, Luke F. Hourigan, Simon A. Zanati, Gregor J. Brown, Rebecca Sonson, Michael J. Bourke  Clinical Gastroenterology and Hepatology  Volume 12, Issue 4, Pages 651-661.e3 (April 2014) DOI: 10.1016/j.cgh.2013.09.049 Copyright © 2014 AGA Institute Terms and Conditions

Figure 1 A 35-mm Paris 0-IIa granular lesion in the proximal transverse colon (A). During resection, large submucosal vessels were evident at 2 points (B). Persistent oozing bleeding was treated with a combination of STSC and clips (C). Residual central oozing was treated with coagulating forceps (D). Clinical Gastroenterology and Hepatology 2014 12, 651-661.e3DOI: (10.1016/j.cgh.2013.09.049) Copyright © 2014 AGA Institute Terms and Conditions

Figure 2 An extensive 0-IIa + Is granular LST of the rectum after partial elevation (A). The resulting defect (B) contained visible submucosal vessels and focal areas of submucosal hemorrhage. The patient returned 2 hours after the resection with rectal bleeding. Inspection of the mucosal defect revealed an actively bleeding central vessel (C), which was treated by the application of 4 clips (D). Clinical Gastroenterology and Hepatology 2014 12, 651-661.e3DOI: (10.1016/j.cgh.2013.09.049) Copyright © 2014 AGA Institute Terms and Conditions

Supplementary Figure 1 Enrollment flowchart. Clinical Gastroenterology and Hepatology 2014 12, 651-661.e3DOI: (10.1016/j.cgh.2013.09.049) Copyright © 2014 AGA Institute Terms and Conditions