Radiation therapy is the use of high-energy X-rays to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external radiation therapy) or from putting materials that produce radiation (radioisotopes) into the body.
Most lung cancer is caused by smoking. About 87% of lung cancers are related to smoking. Cancer-causing substances (carcinogens) in tobacco smoke damage lung cells. Over time, these damaged cells may develop into lung cancer.
During treatment for any stage of lung cancer, you can manage some side effects that may accompany lung cancer or cancer treatment. If your doctor has given you instructions or medications to treat these symptoms, be sure to follow them. In general, healt