Peripheral and Visceral Artery Aneurysm

Abstract

Peripheral artery aneurysms (PAAs) arise in a wide distribution of vessels involving both the upper and lower extremities. The pathogenic mechanism of aneurysm development is still unclear; however, proper identification and appropriate management are critical to minimize associated morbidity. Distal thromboembolism is the most common complication. Treatment options include open surgical and endovascular repair. Patients with one peripheral artery aneurysm should be evaluated for abdominal aortic aneurysm or additional concurrent PAA. Separately, visceral arterial aneurysm (VAA) formation can be a source of significant morbidity. An overview of each organ system (e.g., SMA vs splenic artery) and each segment of the lower extremity (e.g., popliteal vs femoral artery) is beyond the scope of this text, and thus teaching points will focus on peripheral artery aneurysms with brief discussion of visceral aneurysm and pseudoaneurysm management.