Résumé : Many major technical developments have occurred during the last decades in radiotherapy: our efficacy has improved with less toxicity. Nowadays, it allows us to challenge the role of surgery as a local modality for lung cancer both for early, advanced and even metastatic disease. In the present paper, we will mainly discuss the role of SBRT for stage I lung cancer, the place of conventional radiotherapy for stage III and we will review the current treatment of small cell lung cancer from a radiation oncologist perspective.