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[Aneurysm of the persistent sciatic artery].

C Michel1, T Richard, P Jue Denis

  • 1Service de Radiologie Cardio-Vasculaire, Centre Médico-Chirurgical de l'Europe, 9 bis, rue de Saint-Germain, 78560 Le Port Marly. C.Michel20@wanadoo.fr

Journal De Radiologie
|January 8, 2004
PubMed
Summary
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Persistent sciatic artery, a rare anomaly, can cause limb ischemia. This case highlights successful treatment with a femoro-tibio-peroneal bypass graft, leading to spontaneous aneurysmal exclusion.

Area of Science:

  • Vascular Surgery
  • Anatomical Anomalies
  • Radiology

Background:

  • Persistent sciatic artery (PSA) is a rare congenital anomaly where the sciatic artery fails to regress during embryonic development.
  • PSA is often associated with aneurysmal degeneration, leading to potential complications like limb ischemia or rupture.

Observation:

  • A case of PSA presenting with critical limb ischemia and a buttock pulsatile mass is described.
  • The patient was treated with a femoro-tibio-peroneal bypass graft.

Findings:

  • Follow-up helical computed tomography angiography (CTA) at six months revealed spontaneous exclusion of the aneurysm by thrombosis.
  • The PSA segment proximal to the aneurysm thrombosed, effectively excluding the aneurysm from circulation.

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Implications:

  • This case suggests that surgical bypass may lead to spontaneous resolution of PSA aneurysms in select cases.
  • Review of literature indicates PSA is frequently associated with aneurysms and specific complications, often managed with bypass and embolization.