¹Kalp ve Damar Cerrahisi Kliniği, Kartal Koşuyolu Yüksek İhtisas Eğitim ve Araştırma Hastanesi, İstanbul Popliteal aneurysms account for 70% of all aneurysms in the lower extremities and have an estimated incidence of 0.1% to 2.8%. 67 year old woman presented with a swelling mass at right lower extremity. CT angiography revealed a giant femoro popliteal artery aneurysm. The patient was surgically treated with total excision of the aneurysm and PTFE interposition graft. Keywords : Popliteal; artery; aneurysm