Colon cancer guide - MayoClinic.com
Colonoscopy Overview - Colonoscopy 101
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ACS :: Frequently Asked Questions About Colonoscopy and Sigmoidoscopy
Colonoscopy: What You Need to Know
Colonoscopy overview including how a colonoscopy is done and how to ...
Colonoscopy: How it's done and how to prepare - MayoClinic.com
Colon Cancer Screening: Colonoscopy Versus Sigmoidoscopy
http://www.socalgastroenterologist.com/Informational video about colonoscopy and colon screening.Colonoscopy is the endoscopic examination of the large colon and the distal part of the small bowel with a CCD camera or a fiber optic camera on a flexible tube passed through the anus. It may provide a visual diagnosis (e.g. ulceration, polyps) and grants the opportunity for biopsy or removal of suspected lesions. Virtual colonoscopy, which uses 2D and 3D imagery reconstructed from computed tomography (CT) scans or from nuclear magnetic resonance (MR) scans, is also possible, as a totally non-invasive medical test, although it is not standard and still under investigation regarding its diagnostic abilities. Furthermore, virtual colonoscopy does not allow for therapeutic maneuvers such as polyp/tumor removal or biopsy nor visualization of lesions smaller than 5 millimeters. If a growth or polyp is detected using CT colonography, a standard colonoscopy would still need to be performed. Colonoscopy can remove polyps smaller than one millimeter. Once polyps are removed, they can be studied with the aid of a microscope to determine if they are precancerous or not. Colonoscopy is similar but not the same as sigmoidoscopy. The difference between colonoscopy and sigmoidoscopy is related to which parts of the colon each can examine. Sigmoidoscopy allows doctors to view only the final two feet of the colon, while colonoscopy allows an examination of the entire colon, which measures four to five feet in length. Often a sigmoidoscopy is used as a screening procedure for a full colonoscopy.
Screen 4 Colon Cancer: About the Colonoscopy
Colorectal Cancer Screening Fact Sheet - National Cancer Institute
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