A Cause of Atypical Intracranial Subarachnoid Hemorrhage: Posterior Spinal Artery Aneurysms

Background Approximately 1 % of cases of intracranial subarachnoid hemorrhage (SAH) are caused by spinal vascular pathologies. Among them, isolated spinal artery aneurysms are uncommon and a limited number of cases have been reported in the literature.