There has been significant controversy over the optimal screening interval. The colonoscope is much longer than a sigmoidoscope so that the entire colon can be evaluated. Patients are usually sedated for a colonoscopy procedure. A colonoscopy may be recommended for patients who are at high risk for colorectal cancer, have abnormalities on a sigmoidoscopy, or have unexplained fecal occult blood. A barium enema is a radiologic study of the colon and rectum.
Barium is contrast material that is given by enema prior to taking X-rays.
This allows the colon and rectum to be visualized and abnormalities can be evaluated. The patient is placed on a table that moves so the contrast can be followed through the bowel. The American Cancer Society recommends three courses of action beginning at the age of 50, from which the patient and physician can choose for screening. The information provided through OncoLink should not be used for diagnosing or treating a health problem or a disease. It is not a substitute for professional care.