Changes

Lung cancer is one of the few cancers in which risk factors are so clearly identifiable.  Between 80-90% of lung cancer deaths are due to [[smoking]].  So-called "second-hand smoke" is also a risk factor, however the size of the risk is less clear.  Most studies point toward about 3000 deaths per year from cancer acquired via second-hand smoke, but this is still an area of active research.

Lung cancer is one of the few cancers in which risk factors are so clearly identifiable.  Between 80-90% of lung cancer deaths are due to [[smoking]].  So-called "second-hand smoke" is also a risk factor, however the size of the risk is less clear.  Most studies point toward about 3000 deaths per year from cancer acquired via second-hand smoke, but this is still an area of active research.

Other important risk factors for lung cancer include [[asbestos]] exposure (especially in conjunction with [[cigarette]] smoking), [[radon gas]], and other chemical exposures related to certain occupations.

Other important risk factors for lung cancer include [[asbestos]] exposure (especially in conjunction with [[cigarette]] smoking), [[radon]] gas, and other chemical exposures related to certain occupations.

==Natural History & Detection==

==Natural History & Detection==