close Please confirm that you would like to log out of Medscape. If you log out, you will be required to enter your username and password the next time you visit. Log out Cancel Fewer than 6% of high-risk smokers undergo an annual lung cancer screening test as is recommended by health authorities, even though the test can detect early lung cancer when it is still curable, according to a new report from the American Lung Association. It begs the question: Why are the screening rates so dismally low?