Lung cancer is one of the most common causes of death in smoking patients. But this type of cancer can be treated, because smoking causes 90% of this acute and chronic disease, which can be prevented by quitting or reducing smoking. For treatment, the specialist or oncologist consults with the patient to choose the best and most effective method of treatment. The method and system of lung cancer treatment depends on several factors, including: examination of the patient's general health condition, the type and grade of cancer, and the patient's personal choice for the type of treatment. Lung cancer is treated with surgery, chemotherapy, radiation therapy, or drug therapy.