Deep phlebothromboses of iliacal vein and aplasia of the inferior vena cava

Coincidence of deep phlebothromboses of iliacal vein and aplasia of the inf erior vena cava is a rare condition but has significance for further therap y. Two cases of this anatomical malformation with complications are present ed and the importance of therapeutical strategies are discussed. We report on our experiences with the operative procedures of venous thrombectomy and arteriovenous fistula, aimed at increasing the venous flow in the collater als of the aplastic inferior vena cava.