Loading...
In a published case-control study from Canada, screening colonoscopy was associated with lower mortality from left-sided, but not right-sided, colorectal cancer (JW Gastroenterol Feb 20 2009). Now, in another study, investigators have reexamined the issue.
German researchers performed screening colonoscopy in 3287 people (age, ≥55); 586 had undergone screening colonoscopy within the previous 10 years (average, 5 years previously), and 2701 had never undergone screening colonoscopy. The prevalence of advanced left-sided neoplasia (cancer or advanced adenoma) — from splenic flexure to rectum — was significantly higher in the previously unscreened group than in the previously screened group (9% vs. 3%). However, the prevalence of advanced right…