Management algorithm for femoral artery aneurysm

FAA: femoral artery aneurysm; CFA: common femoral artery; SFA: superficial femoral artery; DFA: deep femoral artery.
* More than 0.5 cm/year.
¶ For isolated CFA aneurysm, open repair is performed using an interposition graft.
Δ Infected FAA requires complete resection of affected vessel and reconstruction, ideally with autogenous conduit (typically contralateral saphenous vein). May require a two-stage procedure for severe systemic manifestations.
◊ For CFA aneurysm extending to the SFA or DFA, replantation of SFA or DFA may suffice, or a bypass procedure may be necessary.
§ Most isolated SFA aneurysms are located in the mid to distal SFA, and endovascular repair is generally preferred.
¥ Ligation of the aneurysm may be an option (without repair or bypass) in the absence of lower extremity ischemia.
‡ Imaging, typically using ultrasound, every six months after diagnosis, then, if no change with successive ultrasounds, annual surveillance.
† If during a period of observation, the FAA diameter is >3.0 cm, or there is evidence for rapid expansion (>0.5 cm/year), development of intraluminal thrombus, or saccular morphology, repair is indicated (refer to "Repair FAA" node).