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Post-colonoscopy colorectal cancers in IBD patients

Presented By
Ms Frederikke S. Troelsen, Aarhus University Hospital, Denmark
UEGW 2020
Post-colonoscopy colorectal cancers accounted for a substantial proportion of all IBD-related colorectal cancers. However, IBD patients had an overall low absolute risk of post-colonoscopy colorectal cancers [1]. Post-colonoscopy colorectal cancers are defined as colorectal cancers diagnosed within 6-36 months following a colonoscopy. While post-colonoscopy colorectal cancers account for up to 8% of all colorectal cancers, they could account for up to 50% of all colorectal cancers diagnosed in patients with inflammatory bowel diseases (IBD). However, few studies have investigated the absolute risk in IBD patients undergoing colonoscopy. In a Danish population-based cohort study, almost 35,000 IBD patients who underwent colonoscopy, 138 post-colonoscopy colorectal cancers were found compared with 1,909 post-colonoscopy colorectal cancers among more than 350,000 non-IBD patients. The 6-36 month cumulative incidence proportion of post-colonoscopy colo...

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