Prostatic cancer is the most frequent neoplasm in man, usually it is revealed in the course of study of unknown origin bone metastasis. Pulmonary involvement is normally detected through clinical symptoms or an chest X-ray altered showing intraparenchymatous nodules or a carcinomatous lymphangitis pattern. We present a case of a patient with prostatic cancer and bone metastasis in whom during the extension study we detected endobronchial metastasis. Endobronchial involvement is exceptional in prostatic cancer; through bibliographical review we have only found 12 similar cases published.