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Korean J Gastroenterol  <  Volume 74(6); 2019 <  Articles

Korean J Gastroenterol 2019; 74(6): 326-332  https://doi.org/10.4166/kjg.2019.74.6.326
Risk of Delayed Bleeding after a Colorectal Endoscopic Mucosal Resection without Prophylactic Clipping: Single Center, Observational Study
Hyeonjin Kim*, Jae Hyun Kim*, Youn Jung Choi, Hye Jung Kwon, Hee Kyung Chang1, Sung Eun Kim, Won Moon, Moo In Park and Seun Ja Park
Departments of Internal Medicine and Pathology1, Kosin University College of Medicine, Busan, Korea
Correspondence to: Seun Ja Park, Department of Internal Medicine, Kosin University College of Medicine, 262 Gamcheon-ro, Seo-gu, Busan 49267, Korea. Tel: +82-51-990-5061, Fax: +82-51-990-5055, E-mail: parksj6406@daum.net, ORCID: https://orcid.org/0000-0003-3217-5115

* The first two authors contributed equally to this work as co-first authors of this paper.
Received: May 28, 2019; Revised: July 29, 2019; Accepted: September 2, 2019; Published online: December 25, 2019.
© The Korean Journal of Gastroenterology. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background/Aims: Bleeding is one of the major complications of a colorectal polypectomy. The aim of this study was to identify the risk of delayed bleeding, particularly after a colorectal endoscopic mucosal resection (EMR) without prophylactic clipping.
Methods: Between April 2014 and August 2014, patients who underwent colorectal EMR (≥6 mm and <2 cm) without prophylactic clipping were included. This study evaluated the incidence of delayed bleeding and the associated factors after colorectal EMR without prophylactic clipping.
Results: A total of 717 colorectal polyps (≥6 mm and <2 cm) of 243 patients resected by colorectal EMR in the study period were evaluated. The mean age of the patients was 63 years; 165 patients were men and 78 patients were women. The mean polyp size removed by colorectal EMR was 9.0 mm (range 6.0-19.0), and the number of polyps larger than 1 cm was 212 (29.6%). Delayed bleeding after colorectal EMR occurred in 12 polyps (1.7%) in eight patients (3.3%), and there were no significant risk factors affecting delayed bleeding.
Conclusions: This study identified that the incidence of delayed bleeding on colorectal polyps (≥6 mm and <2 cm) after EMR without prophylactic clipping was 3.3%, but no significant risk factors affecting delayed bleeding were found.
Keywords: Colonic polyps; Endoscopic mucosal resection; Hemorrhage

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