Figure 1: Gray-scale ultrasound of the let popliteal ultrasound shows a fusiform aneurysm of the popliteal artery, measuring 2 cm.
Figure 2: Color Doppler US image shows partial thrombosis of the aneurysm.
- Most common peripheral artery aneurysm
- Most commonly due to atherosclerosis
- More common in male
- Commonly bilateral (need to examine the contralateral popliteal artery), and commonly associated with abdominal aortic and iliac artery aneurysm in about half of all cases.
- Presentation: cold lower extremity from acute thrombosis or distal embolization, asymptomatic pulsatile popliteal fossa mass, rarely rupture
- Size 2 cm or greater
- Intraluminal thrombus
- Doppler US for diagnosis and follow up
- MDCT for planning of repair (surgical or endovascular): extent, location of associated peripheral vascular disease, nearby branch vessels, size and angulation of the aneurysm