Radiotherapy is an efficient weapon as part of the treatment of urological carcinoma Metastases. Palliative radiotherapy for bone metastasis has specific caracteristics in Comparison to conventional radiotherapy: rapid initiation, short overall time, efficient and Persistent action and reduced side effects. The indications are often painful symptomatic Lesions. It should be considered as a part of the whole therapeutic schedule for the patient. Generally, this radiotherapy uses a single fraction.