Its kind of like "hide and seek"--but its no game. Doctors searching for signs of cancer in the lung face many obstacles. But doctors are turning to a new technique that is dramatically reducing lung cancer deaths. In the Medical Spotlight, Will Williams, M.D., a radiologist with Invision Imaging and North Florida Regional Medical Center shows TV 20's David Snyder how they are using CT scans to find lung lesions that could be cancerous.