An air contrast barium enema is a test for your colon. These days, doctors don’t use it as often to look for colorectal cancer. Instead, it’s more common to get a colonoscopy, which can find smaller ...

What is a barium enema? The aim of this investigation is to visualise the large bowel or colon with the use of X-rays and a contrast medium called barium sulphate. The contrast medium is instilled ...