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Questions About Cancer? 1-800-4-CANCER

NCI Dictionary of Cancer Terms

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contrast material  listen  (KON-trast muh-TEER-ee-ul)

  A dye or other substance that helps show abnormal areas inside the body. It is given by injection into a vein, by enema, or by mouth. Contrast material may be used with x-rays, CT scans, MRI, or other imaging tests.