What are the most common symptoms of femoral artery aneurysm?

None: Usually none unless it leaks or bursts and then it's very painful, there is large possibly pulsating lump, and, in the worst case, your blood pressure drops with faintness. Prior to rupture, one may discover an unusually easy to feel pulsation in the crease in the groin which is painless. There's normally a strong pulse there so distinguishing it from an aneurysm may be hard without ultrasound.