Iliocaval compression syndrome.

Iliocaval compression syndrome is a significant disorder in a number of patients who have lower extremity venous complaints. The diagnosis may be suspected by positive findings on exercise strain gauge venous plethysmography and unilaterally increased ambulatory venous pressures. The diagnosis is confirmed by ascending and, in some instances, descending venography which demonstrates the iliocaval compression with or without intraluminal web formation. Transstenosis pressure gradients may be measured to confirm the hemodynamic significance of the lesion. We advocate direct operative repair of the iliocaval junction with rerouting of the iliac artery and excision of the iliocaval webs with cephalic vein patch angioplasty. It provided good results in the present study when coupled with an adjunctive regimen of perioperative subcutaneous heparin and warfarin. Further investigation into the exact prevalence and significance of the iliocaval compression syndrome is needed. Only an aggressive approach to patients with lower extremity venous complaints will help clarify the exact prevalence and natural history of this disorder.