[Cystic adventitial degeneration of the external iliac artery--a case report with long-term follow-up].

The cystic adventitial degeneration of the external iliac artery is an extremely rare disorder with only 10 cases described in literature. It should be considered as the possible origin of unilateral claudication symptoms with sudden onset in relatively young individuals without other vascular disorders. Further investigations should be done before admission to surgical therapy. The classic surgical procedure consists in arterial excision and interposition grafting with saphenous vein. We report one case treated by exarterectomy without recurrence after three years.