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Dr. Ernie Hawk of the National Cancer Institute's Cancer Prevention Division describes four tests that are used to detect colon cancer beginning at age 50: fecal occult blood testing; flexible sigm...
Dr. Ernie Hawk of the National Cancer Institute's Cancer Prevention Division describes four tests that are used to detect colon cancer beginning at age 50: fecal occult blood testing; flexible sigmoidoscopy; barium enema; and colonoscopy.