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Friday, July 20, 2007

Blood test for cancer risk patients

A university researchers comes up with blood test for cancer risk patients that peoplewho is high risk of colon cancer should have the test right away, while people who tests negative may not needs to be looked at for another year.

Doctors use several tools to screen for colon cancer and precancerous lesions, including blood tests and imaging technologies such as X-rays and CT scan knowns as virtual colonoscopies. Another promising new test identifies genetic market for cancer in stool samples.

A traditional colonoscopy, however, is considered the most accurate test. The American Society recommends that patients undergo at least one colonoscopy every 10 years, beginning at the age of fifty. Those witha family history of colorectal cancer should begin screening earlier.

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