During a barium enema exam, an X-ray machine takes pictures of the colon while an enema tube inserted in the rectum delivers liquid barium.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Make your tax-deductible gift and be a part of the cutting-edge research and care that's changing medicine.