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Colonoscopic findings in first-degree relatives of patients with colorectal cancer: a population-based screening program



Colonoscopic findings in first-degree relatives of patients with colorectal cancer: a population-based screening program



Gastrointestinal Endoscopy 73(3): 527-534.E2



A screening colonoscopy is recommended in first-degree relatives (FDRs) of colorectal cancer patients; few prospective, controlled studies have evaluated colorectal findings in a population-based screening program. To evaluate the prevalence of colorectal neoplasia (adenomas and adenocarcinomas) in this increased-risk population, to compare it with that of average-risk individuals, and to identify features that might allow risk stratification for neoplasia among FDRs. Cross-sectional study. Population-based screening program in Trentino, Italy. FDRs of colorectal cancer patients between 45 and 75 years of age with no history of hereditary colorectal cancer syndromes or inflammatory bowel disease. Average-risk individuals undergoing screening colonoscopy. Screening colonoscopy. Neoplasia was found in 33.4% of 1252 FDRs and in 30.3% of 765 controls; advanced neoplasia was found in 11.3% of FDRs and in 6.3% of controls. Odds ratios (ORs) from the multivariate logistic regression analysis adjusted for age, sex, cecal intubation rates, and colon cleansing showed an increased risk of advanced neoplasia (OR 2.41; 95% CI, 1.69-3.43; P < .0001) in FDRs. Age older than 56 years (OR 1.83; 95% CI, 1.15-2.99; P = .013) and male sex (OR 2.17; 95% CI, 1.39-3.10; P < .001) are independent predictors of advanced neoplasia. Italian subjects living in the same geographic area; of 4301 FDRs, 2521 were excluded. The increased risk of advanced neoplasia supports the current recommendation for colonoscopic screening in this group; age and sex may assist in risk stratification of these individuals.

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Accession: 052169686

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PMID: 21353850

DOI: 10.1016/j.gie.2010.12.025


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