Stents in the Management of Stenotic and Occlusive Lesions in the Venous System.

Occlusive disease of the iliac veins or major intrathoracic veins have traditionally been managed by conservative management or by major vascular reconstructive procedures. Over the past 15-20 years, these lesions have become amenable to management with venous stents. Lesions in the iliac venous system are typically due to thrombus secondary to deep vein thrombosis, and lesions in the superior vena cava are due to either malignant intrathoracic lesions, indwelling central venous catheters, pacemaker leads, or enlarged nodes due to granulomatous disease. The success rate for implantation is between 92% and 95% and associated implantation complications vary between 2% and 5%. Primary patency of iliac stents is 70-90% at three years. Venous stents have higher patency in the treatment of stenotic lesions compared to totally occlusive lesions. Primary patency of stents placed in the superior vena cava is also about 70-90% and generally lower in lesions due to malignancy likely related to life expectancy. Stents in the venous system are associated with few complications at the time of insertion and have excellent long-term patency.