Claudication type lower limb pain in an athlete without atherosclerotic risk factors: a case of cystic adventitial disease of the popliteal artery.

Cystic adventitial disease (CAD) of popliteal artery is a rare cause of lower limb claudication. Since its first description in 1947 only about 323 cases have been reported in the literature. We report the case of a 45 year old man with CAD of the popliteal artery causing progressive left lower leg claudication detected by US and Doppler US and characterized with spiral CT angiography. No communication with the knee joint could be demonstrated.