A Ruptured Vasa Corona Aneurysm Treated with NBCA Embolization: Case Report

Abstract

Objective: Ruptured lateral spinal artery (LSA) or vasa corona aneurysms are very rare. We report a case of duplicated posterior inferior cerebellar artery (PICA) and ruptured aneurysm in the vasa corona treated with n-butyl-2-cyanoacrylate (NBCA) embolization.

Case Presentation: A 44-year-old woman experienced sudden headache and impaired consciousness. A CT scan revealed massive subarachnoid hemorrhage in the posterior fossa. A cerebral CT angiography showed a vascular anomaly around the PICA. We performed selective digital subtraction angiography, which revealed duplicate PICA and anastomosis between the anterior spinal artery (ASA) and PICA via the LSA and vasa corona. We found that the aneurysms were located in the vasa corona and performed NBCA embolization of the aneurysms via the ASA.

Conclusion: We were able to understand the complicated vascular anatomy around the duplicated PICA and pial network by detailed examination and NBCA embolization of the vasa corona aneurysms clearly.