Lung cancer is the second most common cancer in men and women; it is the number one cause of death from cancer each year in both men and women. According to the American Cancer Society, 234,030 Americans will be diagnosed with lung cancer this year. While cigarette smoking is the most common cause of lung cancer, exposure to asbestos, radon, environmental factors and second hand smoke can also cause lung cancer.
Learn how radiation therapy is used to treat lung cancer.