[Ultrasound diagnosis, follow-up and therapy of cystic degeneration of the adventitia. 2 case reports and review of the literature].

Two Case Reports and Literature Review: Adventitial cystic disease of the popliteal artery is an unusual but important cause of intermittent claudication. Two cases of adventitial cystic disease were diagnosed by ultrasound investigation. The changing size of the cysts is correlated with the clinical symptoms of the patient. One patient was treated by resection with interposition of saphenous vein; the other by ultrasound guided needle aspiration of the fluid.