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Thursday, September 20, 2007

Blood test for cancer risk

A traditional colonoscopy however, is considered the most accurated test and it was recommends by the American cancer society that patients undergo at least one colonoscopy every ten years, beginning at the age of fifty. Black people and peoplewhose family history of colorectal cancer should begin screening earlier, said an experts.

The procedure and the problemsrequires fasting, consumption of powerful laxatives, anaesthesia and the insertion of a optical scope in the restum. It also carries that risk of punctured colon. This combination has given colocoscopy its unplesant reputation said one of the doctor.

In the study last week, the researchers tested 107 patients for the proteint and used the results to determine if they had cancer or were at risk for cancer. The patient that underwent colonoscopies, and the results from the two tests were compared. The blood test found that 28 of the patients had cancer, the same number of cases discovered by colonoscopy. The test was slightly less apt at fining precancetous poltps, and it found 14 of the 18 cases that were discovered by colonoscopy.

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