Lung cancer<\/a> kills more people than any other cancer in the world. This is often because the symptoms of lung cancer are not always apparent until the cancer is advanced and hence more difficult to cure. As with breast and bowel cancer, screening<\/a> (looking for lung cancer in people who do not have obvious symptoms) can reduce mortality. This is because smaller cancers can be detected at an earlier stage when they are easier to treat. Lung cancer screening is done using non-contrast computed tomography (CT) scans.<\/a><\/p>\n