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      Motion - Colonoscopic Surveillance is More Cost Effective than Colectomy in Patients with Ulcerative Colitis: Arguments for the Motion

      Canadian Journal of Gastroenterology
      Hindawi Limited

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          Abstract

          Patients with ulcerative colitis (UC) are at increased risk for colorectal cancer (CRC), especially those with longstanding disease, pancolitis or primary sclerosing cholangitis. The incidence of colitis- associated cancer is increasing, and the mortality rates from CRC are higher in UC patients than in the general population. Case control studies have demonstrated that surveillance colonoscopy reduces the risk of dying from CRC. A well conducted decision analysis found that surveillance colonoscopy decreases cancer-related mortality and increases life expectancy. The results with surveillance programs were almost as good as with prophylactic colectomy. A subsequent cost effectiveness analysis using the same model found that, compared with a policy of no surveillance, colonoscopic surveillance was more effective at preventing death from CRC and was less costly. The best strategy appears to be to perform colonoscopies every three years. The analysis also showed that colectomy should be recommended in patients with low-grade dysplasia. Patients at very high risk for CRC should undergo yearly colonoscopy, and patients who are concerned about the limitations of this technique should be offered prophylactic colectomy.

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          Most cited references12

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          Colorectal cancer prevention in ulcerative colitis: a case-control study.

          The risk of colorectal cancer (CRC) in ulcerative colitis (UC) increases with extent and duration of disease. Identifying other risk factors would allow targeting of sub-groups at greatest risk, enabling more cost-effective surveillance. We conducted a case-control study comparing 102 cases of CRC in UC with matched controls. Odds ratios (OR) for cancer risk were estimated by conditional logistic regression. A multivariate model assessed the contribution of individual variables. Regular 5-aminosalicylic acid (5-ASA) therapy reduces cancer risk by 75% (OR 0.25, 95% CI: 0.13-0.48, P < 0.00001). Adjusting for other variables, taking mesalazine regularly reduces risk by 81% (OR 0.19, 95% CI: 0.06-0.61, P=0.006) and visiting a hospital doctor more than twice a year also reduces risk (OR 0.16, 95% CI: 0.04-0.60, P=0.007). Considering variables independently, having a family history of sporadic CRC in any relative increases risk fivefold (OR 5.0, 95% CI: 1.10-22.82, P < 0.04). CRC risk among UC patients can be reduced by regular therapy with 5-ASA medication. Colonoscopic surveillance may be best targeted on those unable to take 5-ASAs (e.g. due to allergy) and those with a positive family history of CRC.
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            Is colonoscopic surveillance reducing colorectal cancer mortality in ulcerative colitis? A population based case control study.

            Colonoscopic surveillance is a standard procedure in many patients with long standing, extensive ulcerative colitis (UC), in order to avoid death from colorectal cancer. No conclusive proof of its benefits has been presented however. To evaluate the association between colonoscopic surveillance and colorectal cancer mortality in patients with UC. A population based, nested case control study comprising 142 patients with a definite UC diagnosis, derived from a study population of 4664 patients with UC, was conducted. Colonoscopic surveillance in all patients with UC who had died from colorectal cancer after 1975 was compared with that in controls matched for age, sex, extent, and duration of the disease. Information on colonoscopic surveillance was obtained from the medical records. Two of 40 patients with UC and 18 of 102 controls had undergone at least one surveillance colonoscopy (relative risk (RR) 0.29, 95% confidence interval 0.06 to 1.31). Twelve controls but only one patient with UC had undergone two or more surveillance colonoscopies (RR 0.22, 95% confidence interval 0.03 to 1.74), indicating a protective dose response relation. Colonoscopic surveillance may be associated with a decreased risk of death from colorectal cancer in patients with long standing UC.
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              Inflammatory bowel diseases with onset in childhood. Clinical features, morbidity, and mortality in a regional cohort.

              In a geographically derived incidence cohort diagnosed from 1962 to 1987 we identified all patients with onset of inflammatory bowel diseases (IBD) before the age of 15 years, to describe the clinical course and to compare the course and prognosis with those of adult-onset IBD. The mean incidence of IBD among children below 15 years was 2.2/10(5), 2.0 for ulcerative colitis (UC) and 0.2 for Crohn's disease (CD). At diagnosis children with UC had more extensive disease than adults (P < 0.05). Abdominal pain was also more frequent. The cumulative colectomy probability was 6% after 1 year and 29% after 20 years, not different from that of adults. More females underwent colectomy. With regard to disease activity, apart from the year of diagnosis 60-70% of UC patients were in remission in each of the first 10 years of disease; for CD about 50% were in remission. One patient with UC developed carcinoma of the sigmoid colon. Time between onset of UC and development of carcinoma was 12 years. For CD no differences in clinical appearance at diagnosis and course between children and adults were found in relationship to surgery. No deaths occurred among CD patients. Three CD patients were severely growth-retarded already at diagnosis. The incidence of IBD is low in childhood. At diagnosis children with UC have more widespread disease than adults. Childhood-onset CD does not differ in clinical presentation, disease course, or prognosis from adult-onset CD. However, growth retardation is a problem among male CD patients.
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                Author and article information

                Journal
                Canadian Journal of Gastroenterology
                Canadian Journal of Gastroenterology
                Hindawi Limited
                0835-7900
                2003
                2003
                : 17
                : 2
                : 119-121
                Article
                10.1155/2003/759457
                8c17131f-8f8f-43e4-83a0-cde001deafb0
                © 2003

                http://creativecommons.org/licenses/by-nc/4.0/

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