Korean J Gastrointest Endosc > Volume 36(3); 2008 > Article
Korean Journal of Gastrointestinal Endoscopy 2008;36(3): 132-137.
용종 절제술 후 확인된 대장직장 용종의 간과율
고신대학교 의과대학 내과학교실
The Colonoscopic Miss Rates of Colorectal Polyps as Determined by a Polypectomy
Se Young Park, M.D., Won Moon, M.D., Seun Ja Park, M.D., Moo In Park, M.D., Kyu Jong Kim, M.D., Sun Jung Kim, M.D., Hong Jun You, M.D. and Woo Seong Jeon, M.D.
Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea

Colonoscopy is the most effective method to detect and remove colonic polyps and for colorectal cancer screening and prevention. However, polyps are frequently missed during colonoscopy. The aim of this study was to determine the miss rates of polyps by colonoscopy and to evaluate the factors that affect the miss rates.
Within sixty days after a first-time colonoscopy, consecutive polypectomies were performed in 317 patients who had one or more colon polyps.
The overall miss rate for polyps was 26.6%. As the withdrawal time increased, the number of polyps detected on the first colonoscopy decreased, and the miss rate decreased significantly (respectively p=0.000, p=0.028). The withdrawal time for an expert operator was shorter than the withdrawal time for a beginner operator (p=0.001). The miss rate for a beginner operator and expert operator was not different (p=0.271) due to interference with withdrawal time. The most frequent location of a polyp was the ascending colon and the most frequent size of a polyp was ≤5 mm.
Although colonoscopy is the gold standard for colorectal polyp detection, it is imperfect even when meticulously performed. To reduce the miss rates of polyps, it is important that a careful examination with sufficient withdrawal time is performed, the colonoscopy is complete to the cecum, and that the bowel preparation is adequate. (Korean J Gastrointest Endosc 2008;36:132-137)
Key Words: Colonoscopy, Miss rates, Colonic polyps, Screening test, Polypectomy
주요어: 대장 내시경, 간과율, 대장 용종, 선별검사, 용종 절제술
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
Related articles
Endoscopic Features of Mucous Cap Polyps: A Way to Predict Serrated Polyps  2018 July;51(4)
Optimal Colonoscopy Surveillance Interval after Polypectomy  2016 July;49(4)
The Colonoscopic Withdrawal Time is Correlated with the Rate of Detecting Polyps When Performing Colonoscopy  2009 February;38(2)
The Pathological Differences of Colorectal Polyps Examined between the Use of a Forcep Biopsy and Endoscopic Resection  2008 July;37(1)
Colonoscopic Missing Rate of Colorectal Polyps  2004 April;28(4)
Editorial Office
Korean Society of Gastrointestinal Endoscopy
#817, 156 Yanghwa-ro (LG Palace, Donggyo-dong), Mapo-gu, Seoul, 04050, Korea
TEL: +82-2-335-1552   FAX: +82-2-335-2690    E-mail: CE@gie.or.kr
Copyright © Korean Society of Gastrointestinal Endoscopy.                 Developed in M2PI
Close layer