In patients with malignant pleural mesothelioma who underwent pleurectomy / decortications (P/D) or only diagnostic biopsy, it is difficult to deliver a tumoricidal dose of radiation to the pleura due to the presence of the ipsilateral lung. In recent years, the investigators have implemented a technique for irradiation of the pleura in intact lung, using accelerated hypofractionation with Tomotherapy in an attempt to reduce as far as possible, the dose to the ipsilateral lung. The aim of the treatment was palliation. The investigators analyzed the data of 36 patients with MPM, with a long follow-up without recording death cases related to radiation treatment or radiation pneumonitis grade 4.