An arterial adventitial cyst is an uncommon cystic structure that arises from the wall of the artery.
An ultrasound investigation was carried out.
Using real-time ultrasound the dimensions of the popliteal aneurysm were characterized and the flow in the vessels was demonstrated. Furthermore, a popliteal cyst and adventitial cyst were completely excluded.
The patient underwent a surgical excision and graft interposition and has made an uneventful recovery.