Retrospective Study
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World J Gastroenterol. Aug 21, 2014; 20(31): 10927-10937
Published online Aug 21, 2014. doi: 10.3748/wjg.v20.i31.10927
Risk factors associated with missed colorectal flat adenoma: A multicenter retrospective tandem colonoscopy study
Li Xiang, Qiang Zhan, Xin-Hua Zhao, Ya-Dong Wang, Sheng-Li An, Yang-Zhi Xu, Ai-Min Li, Wei Gong, Yang Bai, Fa-Chao Zhi, Si-De Liu
Li Xiang, Qiang Zhan, Xin-Hua Zhao, Ya-Dong Wang, Yang-Zhi Xu, Ai-Min Li, Wei Gong, Yang Bai, Fa-Chao Zhi, Si-De Liu, Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510000, Guangdong Province, China
Li Xiang, Department of Gastroenterology, Longgang Central Hospital, Shenzhen 518116, Guangdong Province, China
Qiang Zhan, Department of Gastroenterology, Wuxi City People’s Hospital Affiliated to Nanjing Medical University, Wuxi 214194, Jiangsu Province, China
Xin-Hua Zhao, Department of Gastroenterology, Mianyang Central Hospital, Mianyang 621000, Sichuan Province, China
Sheng-Li An, Department of Biostatistics, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510000, Guangdong Province, China
Author contributions: Xiang L and Zhan Q contributed equally to this work; all the authors approved the final version.
Supported by Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2011)
Correspondence to: Si-De Liu, Professor, Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Dadaobei Rd 1838, Guangzhou 510000, Guangdong Province, China. liuside2011@163.com
Telephone: +86-20-61641537 Fax: +86-20-87280770
Received: December 27, 2013
Revised: March 19, 2014
Accepted: May 29, 2014
Published online: August 21, 2014
Core Tip

Core tip: The miss rate for flat adenomas during colonoscopy is high. Patient’s age, concomitant protruding adenomas, bowel preparation, size and location of adenomas, proficiency of the colonoscopist, and withdrawal time are factors affecting the “per-adenoma” adenoma miss rate for flat adenomas.