Pseudoaneurysm of the Internal Iliac Artery: a Rare Cause of Bilateral Lumbosacral Plexopathy

• Published in: Hong Kong journal of radiology : HKJR = Xianggang fang she ke yi xue za zhi Vol. 17; no. 1; pp. 36 - 40
• Main Authors: Low, SF, Kew, TY, Ngiu, CS, Bakar, NA
• Format: Journal Article
• Language: English
• Published: Hong Kong Hong Kong Academy of Medicine 01.03.2014
• ISSN: 2223-6619; 2307-4620
• DOI: 10.12809/hkjr1413170

Pseudoaneurysms of the internal iliac artery are uncommon and are usually associated with trauma. Rarely, they expand subclinically for years and cause significant compression of adjacent vital structures. We report an unusual case of delayed onset bilateral lumbosacral plexopathy resulting from direct compression due to a right internal iliac artery pseudoaneurysm. The neurological symptoms of the patient began 2 years after a stab injury to the right gluteal region. To the best of our knowledge, this is the first report of bilateral lumbosacral plexopathy secondary to a solitary internal iliac artery pseudoaneurysm that manifested clinically 2 years after the injury. This report illustrates how a pseudoaneurysm of the internal iliac artery (an extraspinal pathology) has the potential to cause lumbosacral plexopathy, and describes relevant imaging findings.