Patient was referred to exclude a deep venous thrombosis. She had pain in the calf that progressed during walking. She could not walk without pain for more than 100 meters.
The deep venous system in both patients was completely normal.
There was a significant stenosis in the popliteal artery of the first patient that was caused by cystic adventitial disease. The second older patient also had cystic adventitial changes but without a significant stenosis.