‘Virtual’ Test Finds Most Colon Cancers

So-called virtual colonoscopy finds most colon cancers, researchers say. This finding comes from a new study. Experts say it may increase cancer screening. Many people avoid the standard test, colonoscopy. In this test, a tube inserted in the colon lets the doctor see inside. Virtual colonoscopy is done outside the body, using X-rays. It is formally known as CT colonography. In the study, about 2,500 people were given both tests. Virtual colonoscopy detected 9 out of 10 cancers that the standard test found. The Associated Press wrote about the study September 18. It appeared in the New England Journal of Medicine.