Individuals at average-risk for colorectal cancer should have another screening after ten years if they get a normal result and after five years if they have only 1 2 adenomatous polyps removed.
22.
It is estimated that an individual whose parents have been diagnosed with an adenomatous polyp has a 50 % greater chance to develop colon cancer than individuals with no family history of colonic polyps.
23.
Image : Colon cancer . jpg | adenomatous polyps ( the brownish oval tumors above the labels, attached to the normal beige lining by a stalk ) and one invasive colorectal carcinoma ( the crater-like, reddish, irregularly shaped tumor located above the label)