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Case report
Republished: Ruptured distal AICA pseudoaneurysm presenting years after vestibular schwannoma resection and radiation
  1. Justin R Mascitelli,
  2. Ian T McNeill,
  3. J Mocco,
  4. Alejandro Berenstein,
  5. Joseph DeMattia,
  6. Johanna T Fifi
  1. Department of Neurosurgery, Mount Sinai Health System, New York, New York, USA
  1. Correspondence to Dr Johanna Fifi, Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, 1 Gustave L Levy Place, New York, NY 10029, USA; Johanna.Fifi{at}


Distal anterior inferior cerebellar artery (AICA) pseudoaneurysms are very rare lesions. Although cases have been previously reported, only a few have been reported as a result of vestibular schwannoma (VS) radiation, none have been reported as a result of VS resection, and only one has been reported as treated with parent vessel occlusion (PVO) with n-butyl cyanoacrylate (nBCA). We report a case of a 65-year-old man with a history of right-sided VS surgery and radiation who presented years later with a ruptured pseudoaneurysm of the distal right AICA and was treated with endovascular PVO using nBCA. The aneurysm was completely obliterated and the patient had no worsening of symptoms or neurological exam. The case illustrates a very rare complication of VS surgery and radiation as well as an effective treatment for distal AICA aneurysms.

  • Aneurysm
  • Hemorrhage
  • Liquid Embolic Material
  • Subarachnoid
  • Tumor

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