The most commonly used treatments for lung cancer are surgery, chemotherapy and radiation. The exact treatment a lung cancer patient receives will depend on several factors. These include the type of cancer, the stage or extent to which it has spread at the time of diagnosis, and the overall health of the patient. Non-small cell lung cancer, which accounts for about 80 percent of lung cancer cases, is treated depending on its stage at diagnosis. Lung surgery is the mainstay of treatment for the early stages of lung cancer. Cancerous tissue, along with a margin of healthy tissue, is removed. Patients who are unable to have surgery may be treated with radiotherapy. While cure rates for early lung cancer are good, it is rarely detected in its early stages. As non-small cell cancer spreads within the chest, it is treated with some combination of surgery, chemotherapy and radiotherapy. Once cancer has spread to other parts of the body, chemotherapy and radiotherapy replace surgery as the ma