Adventitial cystic disease of the popliteal artery
Recent intermittent claudication (walking distance 250 m) of the left calf.
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
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The popliteal artery is expanded and is of high T2 signal. The lumen is compressed by cystic regions. The features are consistent with adventitial cystic disease of the popliteal artery.
Cystic adventitial disease is an uncommon vascular disease affecting peripheral arteries of middle-aged individuals with very high male predilection. It most commonly affects the popliteal artery.