Barium Enema – A group of x-rays of the lower intestinal tract. A liquid that contains a silver-white metallic compound, called barium, is put in the rectum. The barium then coats the lower intestinal tract. After that, x-rays are taken to look for abnormal areas. This procedure is also called a lower GI series.
A barium enema is often done to see if an individual has polyps of the colon, cancer of the colon, diverticulosis, or diverticulitis.