Study of the Efficacy of SBRT on Unresectable Peripheral Primary Tumor

The purpose of this study is to evaluate the efficacy of stereotactic lung radiation therapy after concomitant radiochemotherapy for unresectable stage III non-small cell lung carcinoma (NSCLC) with peripheral primary tumor. Evaluate in terms of local control rate at 6 months the addition of stereotactic radiotherapy after concurrent chemoradiotherapy in the treatment of mediastinal non-resectable stage III NSCLC having a peripheral primary tumor. The number of patients required in this multicenter prospective study is 70. This is a prospective, multicenter, non comparative and non randomized study.