Screening tests play a key role in detecting polyps before they become cancerous. These tests can also help find colorectal cancer in its early stages, when you have a good chance of recovery.
Screening methods include:
Aug. 12, 2014
- Colonoscopy, the most sensitive test for colorectal polyps and cancer. If polyps are found, your doctor may remove them immediately or take tissue samples (biopsies) for analysis.
- Virtual colonoscopy (CT colonography), a minimally invasive test that uses a CT scan to view your colon. Virtual colonoscopy requires the same bowel preparation as colonoscopy. If a polyp is found, you'll need colonoscopy to have it removed.
- Flexible sigmoidoscopy, in which a slender, lighted tube is inserted in your rectum to examine it and the last third of your colon (sigmoid). If a polyp is found, you'll need colonoscopy to have it removed.
- Ahnen DJ, et al. The approach to the patient with colonic polyps. http://www.uptodate.com/home. Accessed March 25, 2014.
- Feldman M, et al. Sleisenger & Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 9th ed. Philadelphia, Pa.: Saunders Elsevier; 2010. http://www.clinicalkey.com. Accessed March 28, 2014.
- Goldman L, et al. Goldman's Cecil Medicine. 24th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.clinicalkey.com. Accessed March 27, 2014.
- AskMayoExpert. Why is surveillance of colorectal polyps important? Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2012.
- Elmunzer BJ. Endoscopic resection of sessile colon polyps. Gastroenterology. 2013;144:30.
- Baron TH, et al. Recommended intervals between screening and surveillance colonoscopies. Mayo Clinic Proceedings. 2013;88:854.
- Kennedy RD, et al. The natural history of familial adenomatous polyposis syndrome: A 24 year review of a single center experience in screening, diagnosis, and outcomes. Journal of Pediatric Surgery. 2014;49:82.
- Sharma P, et al. Advanced imaging in colonoscopy and its impact on quality. Gastrointestinal Endoscopy. 2014;79:28.
- Hegde M, et al. ACMG technical standards and guidelines for genetic testing for inherited colorectal cancer (Lynch syndrome, familial adenomatous polyposis, and MYH-associated polyposis). Genetics in Medicine. 2014;16:101.
- What I need to know about colon polyps. National Digestive Diseases Information Clearinghouse. http://digestive.niddk.nih.gov/ddiseases/pubs/colonpolyps_ez/#what. Accessed March 29, 2014.
- Ahnen DJ, et al. Colorectal cancer: Epidemiology, risk factors, and protective factors. http://www.uptodate.com/home. Accessed April 4, 2014.
- Golden AK. Decision Support System. Mayo Clinic, Rochester, Minn. March 10, 2014.
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