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KMID : 0614620040440020077
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Korean Journal of Gastroenterology
2004 Volume.44 No. 2 p.77 ~ p.83
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The Recurrence Rate of Colon Polyp after Polypectomy and the Interval of Surveillance Colonoscopy: Predictors of Early Development of Advanced Polyp
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김진배/Kim JB
한동수/이항락/김종표/전용철/손주현/함준수/Han DS/Lee HL/Kim JP/Jeon YC/Sohn JH/Hahm JS
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Abstract
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Background/Aims: Surveillance of individuals with colon polyps is important for the prevention of colon cancer,and its interval is based on the clinical status. Our aims were to determine the recurrence rate of advanced polyp after polypectomy and estimate the adequate interval of surveillance colonoscopy as well as the risk factors of
recurrence in Korea.
Methods: Ninety-seven patients who underwent follow-up colonoscopy after initial colonoscopic polypectomy were retrospectively studied. All polyps were endoscopically removed with electrocautery.
Results: Mean number of initial polyps were 2.2 and advanced polyps were observed in 40% of the patients. The cumulative recurrence rate of colon polyp was 13.8% within 1 year, and 60% within 3 years, while that of advanced polyps was 2.5% and 31% within 1 and 3 years, respectively. The significant difference was noted according to the initial polyp number in both overall and advanced polyp recurrence rate. The age at the
diagnosis of colon polyps was a significant factor only in overall polyp recurrence rate. Patients who initially had one polyp showed 15% of advanced polyp recurrence within 3 years.
Conclusions: Recurrence of advanced polyp is very rare within one year after polypectomy. Patients with single polyp have low risk and thus, their surveillance may be delayed beyond the standard 3 years. When surveillance colonoscopy is to be performed for the patients with 2 or more polyps, initial polyp number and age should be considered. (Korean J Gastroenterol)
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