Persistent Sciatic Artery Aneurysm

From diagnosis to treatment of persistent sciatic artery: a revised review of the literature

“…The authors further reported an aneurysm in PSA three months later in the same patient and the treatment was completed applying a 10x80 mm wallcoated stent. In another case report, Nuño-Escobar et al [38] described the treatment of an aneurysm sac in PSA of a 53-year-old male patient with recurrent peripheral embolism applying a 10x50 mm coated stent. In addition, Yamamoto et al [39] reported that endovascular treatment is effective and can be safely used.…”

Nonatherosclerotic limb ischemia: Prompt evaluation and diagnosis

“…13,14 ■ PERSISTENT SCIATIC ARTERY Persistent sciatic artery is a rare developmental abnormality. [15][16][17] Normally, as the femoral artery develops in the embryo, the sciatic artery involutes to form the inferior gluteal artery. But if the femoral system fails to mature, the sciatic artery, which is adjacent to the sci-Popliteal artery aneurysm is associated with abdominal aortic aneurysm in 50% of patients Asymptomatic, persistent sciatic artery found incidentally does not require repair, but it should be followed atic nerve posteriorly as it goes through the sciatic foramen, persists and functions as the major artery supplying the lower extremity, continuing to the posterior thigh and joining the popliteal artery (Figure 3).…”

“…But if the femoral system fails to mature, the sciatic artery, which is adjacent to the sci-Popliteal artery aneurysm is associated with abdominal aortic aneurysm in 50% of patients Asymptomatic, persistent sciatic artery found incidentally does not require repair, but it should be followed atic nerve posteriorly as it goes through the sciatic foramen, persists and functions as the major artery supplying the lower extremity, continuing to the posterior thigh and joining the popliteal artery (Figure 3). 15,17 Persistent sciatic artery has an incidence of 2.5 to 4 per 10,000 per year 15 and is bilateral in almost half of cases. 16 Up to 40% of patients have no symptoms, but symptoms may develop by age 40 to 50.…”

“…Because of repeated trauma to the vessel as it passes through the sciatic foramen, 18 the persistent sciatic artery typically sustains accelerated atherosclerotic changes that make it susceptible to aneurysm formation, 15 and up to 46% of patients present with aneurysmal degeneration. 17 Classically, patients present with lower extremity ischemia from atherosclerotic changes in the persistent sciatic artery or aneurysmal degeneration and thromboembolism. 15 Rarely, these aneurysms rupture.…”

“…15,17 Other signs and symptoms include a pulsatile mass in the buttock, lower extremity numbness, motor weakness, and radicular pain along the sciatic nerve distribution from nerve compression. [15][16][17] Physical findings vary but are distinguished by the lack of femoral pulses in the presence of pedal pulses. A pulsatile buttock mass with evidence of lower extremity nerve compression or limb ischemia or both is pathognomonic of a persistent sciatic artery aneurysm.…”