[Retroperitoneal leiomyosarcoma originating from the inferior vena cava. A case report]

After a brief review of the literature, the authors report a rare case primitive retroperitoneal leiomyosarcoma originating from the inferior vena cava. The tumor was diagnosed very early thanks to its early symptoms and signs (abdominal pain and palpability), which appeared when the tumor size was only 5 cm. Therefore it was possible a macroscopically radical surgical exeresis even if the anatomical situation was particularly delicate. The low grading and staging of the tumor allowed to express a positive prognosis in spite of the malignant nature of this sarcoma.