Leiomyosarcoma of femoral veins.

Responsible for venous obstruction is a lot of causes, among which area benign or malignant lesions. These lesions obstruct the veins by either intraluminal or extraluminal involvement or by external pressure, due to tumors growing in the surrounding tissues. Owing to its rarity, the Authors report on a case of leiomyosarcoma of the left femoral vein treated in their Unit.