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Case Reports
. 2020 Jun 28;15(8):1354-1358.
doi: 10.1016/j.radcr.2020.05.037. eCollection 2020 Aug.

Bilateral persistent sciatic arteries complicated by a unilateral aneurysm: A case report

Affiliations
Case Reports

Bilateral persistent sciatic arteries complicated by a unilateral aneurysm: A case report

Aljawhara R Alsaadoun et al. Radiol Case Rep. .

Abstract

First described by Green in 1832, persistent sciatic artery (PSA) is a rare anomaly classified into 2 types, namely complete and incomplete. We report the case of bilateral PSAs diagnosed by computed tomography angiography (CTA) in a 45-year-old female who presented with a 2-week history of pain and numbness in the left lower limb. Specifically, the CTA showed an incomplete PSA of the right lower limb and a complete PSA of the left lower limb complicated by an aneurysm. Complications of PSA, including aneurysmal rupture, occlusive thrombosis, and distal embolization, are critical as they impose serious hazards to the viability of the lower limbs. Asymptomatic patients with PSA require close surveillance for early detection and proper management of PSA-related complications, as they are prone to early atheromatous degeneration and aneurysm formation.

Keywords: Aneurysm; Bilateral Persistent Sciatic Artery; Complications; Persistent Sciatic Artery; Vascular Anomaly.

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Figures

Fig 1
Fig. 1
Digital subtraction angiography of the lower limbs. Axial coronal and oblique reformatted images showing the left complete persistent sciatic artery (PSA, arrow head) running into the posterior thigh and joining the popliteal artery. The PSA is complicated by a saccular aneurysm (arrow).The right incomplete PSA terminates just above the popliteal fossa with no communication (black short arrow).
Fig 2
Fig. 2
Computed tomography angiography. An axial scan of the gluteal region showing a saccular dilatation (aneurysm) of the left persistent sciatic artery (white arrow).

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