Persistent sciatic artery (PSA) is a rare developmental anomaly, usually associated with iliofemoral hypoplasia and dependence on the sciatic artery as the dominant inflow to the lower extremity. Although rare, this anomaly is associated with a very high rate of aneurysm formation and frequent thromboembolic complications presenting as lower extremity ischemia, and requires familiarity on the part of the vascular surgeon to properly diagnose the disorder and plan therapy. The authors present 2 cases of PSA presenting with lower extremity ischemia and review the pathophysiology, diagnosis, and treatment of this rare but important anomaly.

Hepatic aneurysms are a rare sequela of vascular abnormalities in the liver, including trauma, infection, necrotizing vasculitis such as polyarteritis nodosa (PAN), and iatrogenic and arterial mediolysis. Presentation with intra-abdominal hemorrhage is associated with a high mortality rate. We describe life-saving transcatheter coil embolization of multiple isolated ruptured hepatic pseudoaneurysms in a patient with no history or clinical findings of PAN. We present angiographic findings and intra-arterial transcatheter embolization techniques in the treatment of ruptured large hepatic artery aneurysms. Endovascular specialists should recognize that PAN could present with classic angiographic findings and, in some cases, as life-threatening ruptured isolated hepatic artery aneurysms as its first presentation.