Post-colonoscopy XXXX in average-risk Korean subjects with a normal initial colonoscopy.

@entity5 @entity652 @entity14
BACKGROUND/AIMS: There are relatively few studies regarding the incidence of post-colonoscopy @entity14 (PCCRC) in Asian countries. We evaluated the characteristics of PCCRC in average-risk Korean subjects. MATERIALS AND METHODS: This study included subjects who were >= 50 years of age and had undergone a first completed colonoscopy between January 2001 and December 2004, at which no baseline @entity652 had been detected, followed by a second colonoscopy 1-5 years later. The incidences and characteristics of advanced @entity5 in these subjects were assessed. RESULTS: A total of 343 subjects underwent follow-up colonoscopy within 5 years. Seventy-three (21.3%) subjects were found to have at least one @entity652 on follow-up colonoscopy. Advanced @entity652 was found in eight (2.3%) subjects, and non-advanced @entity652 were found in 65 (19.0%). Five (1.5%) subjects were diagnosed with invasive @entity14 following a normal colonoscopy. The putative reason for PCCRCs was missed lesions in two (40.0%) subjects and a new @entity5 in three (60.0%). CONCLUSION: The risk of advanced @entity5 (including PCCRCs) within 5 years after a normal baseline colonoscopy in our cohort was not low. Considering that 40% of PCCRCs were attributable to missed lesions, our results emphasize the need for technical improvement of colonoscopic examinations to improve @entity652 .
