7. Popliteal Artery Aneurysm

A 77-year-old male presented to the emergency department with a 2-day history of increased swelling and pain in the left knee and distal thigh. He was unable to extend the knee without severe pain. On examination, the patient had a large pulsatile mass in the left popliteal fossa and distal thigh. Which of the following is the initial diagnostic test of choice for popliteal artery aneurysm? A. Magnetic resonance imaging (MRI). An arteriogram was obtained, which revealed bilateral popliteal artery aneurysms, right common iliac artery aneurysm, and multiple aneurysms of the left internal iliac artery (Figs 7.1 and 7.2). Which of the following statements about popliteal artery aneurysm is false? A. It is bilateral in approximately 60 percent of cases. B. Approximately 80 percent of patients with bilateral popliteal artery aneurysm have another aneurysm elsewhere. C. Duplex ultrasonography is the initial diagnostic test of choice. D. Rupture of popliteal artery aneurysm occurs frequently.