Glossary Term:


double contrast barium enema



test used to help diagnose colorectal cancer. Barium sulfate, a chalky substance, is put in through the rectum to partly fill and open up the colon. When the colon is about half-full of barium, air is put in to expand the colon. Abnormal changes in the colon can then show up on x-ray films. Also called DCBE and barium enema with air contrast. See also barium enema, colon, colorectal cancer screening, rectum.