The main benefit of a virtual colonoscopy is that it can detect signs of colon cancer and polyps early. Polyps are small clumps of cells that form on the lining of the colon. While they are mostly harmless, they could potentially develop into colon cancer over time.
Early detection of polyps or cancers allows for earlier intervention and a better prognosis. Colorectal cancer is actually a highly preventable disease if identified early at the polyp stage.