[Polycystic retroperitoneal leiomyosarcoma. A clinical and anatomo-pathological contribution]

The Authors report an unusual case of retroperitoneal leiomyosarcoma, multicystic, resembling an ovarian cystoma in a patient with simultaneous subclavian-axillary thrombosis. They analyze anatomo-pathological and clinical aspects of this kind of tumor and underline the possible errors they themselves faced. To they come to the conclusion that a careful diagnostic iter of this kind of tumor must be carried out and that the surgical approach must be radical.