Lung adenocarcinoma is the most common type of lung cancer diagnosed in the U.S. Just over half of all non-small-cell lung cancers (NSCLCs) are adenocarcinomas. Finding out that you're at risk of lung ...

Lung cancer is cancer that starts in your lungs. It is the leading cause of cancer death among men and women. Finding lung cancer early before it spreads improves your chances of beating the disease.