<P> Colonoscopy ( / ˌkɒləˈnɒskəpi / ) or coloscopy ( / kəˈlɒskəpi / ) is the endoscopic examination of the large bowel 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 can provide a visual diagnosis ( e.g. , ulceration , polyps ) and grants the opportunity for biopsy or removal of suspected colorectal cancer lesions . Colonoscopy can remove polyps as small as one millimetre or less . Once polyps are removed , they can be studied with the aid of a microscope to determine if they are precancerous or not . It can take up to 15 years for a polyp to turn cancerous . </P>
<P> Colonoscopy ( / ˌkɒləˈnɒskəpi / ) or coloscopy ( / kəˈlɒskəpi / ) is the endoscopic examination of the large bowel 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 can provide a visual diagnosis ( e.g. , ulceration , polyps ) and grants the opportunity for biopsy or removal of suspected colorectal cancer lesions . Colonoscopy can remove polyps as small as one millimetre or less . Once polyps are removed , they can be studied with the aid of a microscope to determine if they are precancerous or not . It can take up to 15 years for a polyp to turn cancerous . </P>
where does the tube go in a colonoscopy
where does the tube go in a colonoscopy
the large bowel the distal part of the small bowel
the large bowel the distal part of the small bowel