Who get popliteal artery aneurysms?
Elderly men. They are very uncommon in women.
There is a large right popliteal artery aneurysm. Thin, linear contrast enhancement is seen within the aneurysmal sac but no flow is seen within the distal popliteal artery.
The right peroneal artery is reconstituted by superficial collateral vessels. Patchy opacification of the anterior tibial artery to the mid calf also reflects collateral flow.
Smaller left popliteal artery aneurysm. Left posterior tibial artery is occluded close to its origin. The anterior tibial artery and peroneal artery opacity normally.