Korean J Gastrointest Endosc > Volume 26(4); 2003 > Article
Korean Journal of Gastrointestinal Endoscopy 2003;26(4): 199-204.
대장내시경의 대장직장 용종 및 선종의 간과율
가톨릭대학교 의과대학 내과학교실, *예방의학교실
Colonoscopic Miss-rate of Colorectal Polyp and Adenoma
Kyu Yong Choi, M.D., Bo In Lee, M.D., Se Young Lee, M.D.*, Won Chul Lee, M.D.*,
Departments of Internal Medicine and *Preventive Medicine, College of Medicine,
Backgound/Aims: While colonoscopy is the gold standard diagnostic test for the detection of colorectal polyps (especially adenomas), it is also an imperfect method. We prospectively estimated the colonoscopic miss-rate of colorectal polyp and adenoma.
We performed polypectomies in 603 out of 2,006 patients over age of 40 who underwent their first time colonoscopy between September 1999 and June 2001. A follow-up colonoscopy was performed within 60 days in 235 (53.4%) among 440 enrolled patients.
Seventy-three (31.0%) of 235 patients with polyps on initial colonoscopy were missed polyps and 37 (23.2%) of 159 patients with adenomas on initial colonoscopy were missed adenomas. As the number of polyps on the initial examination increased, the miss-rate increased significantly (p=0.01). The most frequent size of missed polyp was 3∼4 mm (55.5%, p=0.00) and the most frequent location was sigmoid colon (27.3%, p=0.00).
It may be a fallacy to declare that all colorectal polyps are removed just after one session of colonoscopy. Examiners should make every effort to reduce the miss-rate of colorectal polyps during colonoscopy. (Korean J Gastrointest Endosc 2003;26:199⁣204)
Key Words: Colorectal polyp, Colorectal adenoma, Colonoscopy, Miss-rate
주요어: 대장직장 용종, 대장직장 선종, 대장내시경, 간과율
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