Lung cancer survival rates depend on the stage of the cancer when it is discovered and the effectiveness of any treatment undertaken, according to Mayo Clinic. As of 2014, approximately half of all people diagnosed with lung cancer in its earliest stage live for five years or more after diagnosis.
By contrast, when lung cancer is diagnosed in its late stages, the five-year rate of survival plummets to 4 percent. In the late stages of lung cancer, the disease has generally metastasized or spread to other organs or parts of the body, according to Mayo Clinic.
Lung cancer is the leading cause of cancer in women as of 2014, according to the American Lung Association. Worldwide, lung cancer is the most common type of cancer and accounted for 1.6 million deaths in 2012.