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Updated: Apr 29, 2026

Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
The role of accessory obturator arteries in prostatic arterial embolization
Tiago Bilhim1, Joao Pisco2, Luís Campos Pinheiro3
1Departamentos Universitários de Anatomia, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, Lisbon, 1169-056; Interventional Radiology, Hospital Saint Louis, Lisbon.
Abstract:
In 9 of 491 patients (1.8%) who underwent prostatic arterial embolization (PAE) for benign prostatic hyperplasia from March 2009-November 2013, prostatic arteries arose from the external iliac artery via an accessory obturator artery (AOA). Computed tomography angiography performed before the procedure identified the variant and allowed planning before the procedure. The nine AOAs were catheterized from a contralateral femoral approach. Bilateral PAE was technically successful in the nine patients. There was a mean decrease in international prostate symptom score of 6.5 points and a mean prostate volume reduction of 15.1% (mean follow-up, 4.8 mo) in the nine patients.
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