Transluminal placement of endovascular stent-grafts for treatment of penetrating ulcers of the descending thoracic aorta appears to be a possible alternative to classical surgery. After treatment, follow-up by CT is essential to detect possible complications of the disease.

We describe the case of a patient with adventitial cystic disease of the popliteal artery in which a direct anatomic communication between the cysts and the nearby knee joint was demonstrated by magnetic resonance imaging and confirmed by surgery. This unusual observation could shed some light on the much debated question of the cause, the pathogenesis, and the management of the affection. Moreover, it emphasizes the importance and the role of magnetic resonance imaging in the diagnosis of adventitial cystic disease of the popliteal artery.

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Placement of an occluding endograft associated with axillofemoral bypass grafting is a good alternative for patients at high risk with complex anatomic features. Longer-term follow-up study is needed to evaluate this endoluminal technique.