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Congress: ECR25
Poster Number: C-22913
Type: Poster: EPOS Radiologist (educational)
Authorblock: A. Bruno, C. Floridi, L. M. Cacioppa, N. Rossini, T. Valeri, M. Rosati, P. Boscarato, R. Candelari, A. Giovagnoni; Ancona/IT
Disclosures:
Alessandra Bruno: Nothing to disclose
Chiara Floridi: Nothing to disclose
Laura Maria Cacioppa: Nothing to disclose
Nicolo' Rossini: Nothing to disclose
Tommaso Valeri: Nothing to disclose
Marzia Rosati: Nothing to disclose
Pietro Boscarato: Nothing to disclose
Roberto Candelari: Nothing to disclose
Andrea Giovagnoni: Nothing to disclose
Keywords: Anatomy, Interventional vascular, Vascular, CT-Angiography, Embolisation, Aneurysms, Ischaemia / Infarction
Learning objectives To emphasize the importance of knowing and being able to recognize the persistent sciatic artery (PSA). 
Read more Background PSA is a rare vascular anomaly resulting from the failure of the regression of the sciatic artery (SA), a branch of the umbilical artery providing blood supply to the lower limbs during embryonic development. Typically, the distal part of the SA regresses by the third month of gestation when the external iliac artery develops, and the superficial femoral artery (SFA) becomes responsible for the lower limb's perfusion. However, in PSA, the sciatic artery remains intact and follows the sciatic nerve...
Read more Findings and procedure details Case 1A 79-year-old female presented with with right flank and gluteal pain radiating down the right leg, with palpable and symmetric femoral pulses and normal distal bilateral perfusion. A CTA examination (Figure 2) revealed a complete right PSA with aneurysmal degeneration measuring 57mm, along with a normal SFA (type 1). The left leg showed a fully occluded PSA with hypoplastic SFA (type 2A). The popliteal artery was supplied by collateral pathways arising from the hypoplastic SFA and the deep femoral artery....
Read more Conclusion PSA, although rare, is clinically significant due to its potential to cause lower limb ischemia, aneurysmal complications, and an increased risk of amputation in 8–10% of patients, even in advanced age. CTA of the lower limbs is essential for the rapid identification of PSA and accurate treatment planning. CTA can provide information on the anatomy of the PSA and SFA, a comprehensive evaluation of distal peripheral arteries, and has high diagnostic accuracy (an overall sensitivity of 95-97% and specificity of...
Read more References Green, P.H. On a new variety of femoral artery.Lancet 1832, 17, 730–731. Omer, A.; Alkadumi, M.; Jupalli, S.; Dobtsis, J. Persistent sciatic artery an incidental finding. Case Rep.2021, 16, 1745–1748. Pillet, J.; Albaret, P.; Toulemonde, J.L.; Cronier, P.; Raimbeau, G.; Chevalier, J.M. Tronc artériel ischio-poplité, persistance de l’artère axiale [Ischio-popliteal artery trunk persistence of the axial artery]. Assoc. Anat.1980, 64, 97–110. (In French) Gauffre, S.; Lasjaunias, P.; Zerah, M. Sciatic artery: A case, review of literature and attempt of systemization. Radiol. Anat. 1994, 16, 105–109. van Hooft, I.M.; Zeebregts, C.J.;...
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