What clinical and imaging features favor presence of a retroperitoneal leiomyosarcoma?
Retroperitoneal leiomyosarcoma occurs more commonly in women, whereas other retroperitoneal sarcomas occur more commonly in men or with similar frequencies in men and women. In addition, retroperitoneal leiomyosarcoma is often found in a location adjacent to or within the lumen of the inferior vena cava. Presence of these features may therefore favor this particular type of retroperitoneal sarcoma.