Giant popliteal aneurysm presenting with foot drop.

Popliteal aneurysms are the most common peripheral arterial aneurysm and occur most commonly among older men with established cardiovascular disease. Popliteal aneurysms are asymptomatic or otherwise present with intermittent claudication, pressure symptoms in the popliteal fossa, distal embolization, and, rarely, rupture. We present a patient with a remarkably large popliteal aneurysm of 10 cm presenting as a popliteal swelling with foot drop and no signs of limb ischemia. According to our literature search, it is the largest reported popliteal aneurysm, and its corresponding symptoms are unusual. The diagnostic workup and treatment are presented.