An Isolated Femoral Artery Aneurysm Presenting with Leg Swelling

ABSTRACT

A femoral artery aneurysm (FAA) is a rare disease with the symptoms of nerve and vein compression, lower extremity ischemia, local pain, pulsating mass, and rupture. Compression of the femoral vein may cause the symptoms of lower extremity venous insufficiency, which accounts for nearly 10% of FAA patients. (Case) A 55 year-old female was hospitalized, suffering from swelling, heaviness and venous ectasia of the left lower extremity. Preoperative CT angiography revealed a 3 cm-sized FAA and compression of the femoral vein due to the aneurysm in her left inguinal area. The aneurysm extended from the distal external iliac artery (EIA) to both the proximal superficial femoral artery (SFA) and profunda femoris artery (PFA). After an aneurysmectomy, interposition grafting from the EIA to the SFA with reimplantation of PFA was done. Immediately after the operation, the symptoms dramatically disappeared, and the follow-up CT revealed the decompressed femoral vein.