Lung cancer is one of the most preventable cancers and smoking is the major cause. Lung cancer presented in two forms small cell lung cancer and non small cell lung cancer. Non small cell lung cancers are include a variety of pathologies, but despite of diversity, they are similar treatments. Accura testaging of lung can thereafter diagnosis is very important Because treatment and prognosis of the disease will be determined entirely on the basis of staging. Non surgical treatments of non small cell lung cancers include: adjuvant chemoradiation/chemotherapy and neoadjuvant chemo radiation/chemotherapy. Non surgical treatments of small cell lung cancers are chemo, radiation and chemotherapy.