[Appearance of carcinosarcoma after radiotherapy for local recurrence after radical prostatectomy. Case report and review of the literature].

Carcinosarcoma of the prostate is an extremely rare tumor. In the case of rapid tumor progression, especially after radiation therapy to the pelvis or after hormone deprivation therapy because of prostate cancer, this tumor entity should be considered, and immediate histological confirmation is required. The only curative therapy is immediate radical surgical excision. We report about the first case of a carcinosarcoma after salvage radiation therapy for local recurrence of adenocarcinoma of the prostate years after radical prostatectomy.