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By Mayo Clinic staffA colonoscopy poses few risks. Rarely, complications of a colonoscopy may include:
- Adverse reaction to the sedative used during the exam
- Bleeding from the site where a tissue sample (biopsy) was taken or a polyp or other abnormal tissue was removed
- A tear in the colon or rectum wall
References
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- Schilling McCann JA, ed. Diagnostic Tests. Philadelphia, Pa.: Lippincott Williams & Wilkins; 2007.
- Colonoscopy. National Digestive Diseases Information Clearinghouse. http://digestive.niddk.nih.gov/ddiseases/pubs/colonoscopy. Accessed March 18, 2009.
- Fletcher RH. Screening strategies in patients at average risk for colorectal cancer. http://www.uptodate.com/home/index.html. Accessed March 18, 2009.
- Levin B, et al. Screening and surveillance for the early detection of colorectal cancer and adenomatous polyps, 2008: A joint guideline from the American Cancer Society, the US Multi-Society Task Force on Colorectal Cancer, and the American College of Radiology. Gastroenterology. 2008;134:1570.
- Weinberg DS. In the clinic: Colorectal cancer screening. Annals of Internal Medicine. 2008;148:ITC2-1.