Why would I want to have a lung cancer screening CT?

The best hope for curing lung cancer is finding it as early as possible; the I-ELCAP research shows that annual CT screening can find 85% of lung cancers in their earliest, most curable stage.  If you are at risk, a CT scan can detect tiny spots on your lungs (called 'nodules') that may indicate lung cancer in this early stage (New England Journal of Medicine 2006; 355; 1763-1771).