Periurethral carcinosarcoma: a report of 2 cases with a review of the literature.

Carcinosarcomas are rare, aggressive tumors that can arise in various sites of the body, especially the genitourinary system. In this system, the most common location for the tumor is the uterus in the female and the urinary bladder in the male. To our knowledge, only 2 cases with a periurethral location for this tumor have been previously described in the English literature.