We report a patient with a probable dissecting aneurysm of the anterior inferior cerebellar
artery (AICA) initially presenting with a nonhemorrhagic symptom, which resulted in
subarachnoid hemorrhage. A 61-year-old woman suddenly experienced nausea. Computed
tomography (CT) on admission showed a high-density mass with a double lumen in the
right cerebellopontine angle without subarachnoid hemorrhage. Five days after the
onset, she suddenly lost consciousness. CT demonstrated subarachnoid hemorrhage. Emergency
angiography revealed a probable dissecting aneurysm at the lateral pontomedullary
segment of the right AICA. Although the initial symptom is not hemorrhage, an unruptured
dissecting aneurysm of the AICA may have a high risk of rupture. Immediate radical
treatment to prevent subsequent rupture is necessary for even an unruptured dissecting
aneurysm of the AICA.
Key Words
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References
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Article info
Publication history
Published online: May 23, 2015
Accepted:
March 12,
2015
Received in revised form:
January 7,
2015
Received:
November 21,
2014
Identification
DOI: https://doi.org/10.1016/j.jstrokecerebrovasdis.2015.03.055
Copyright
© 2015 National Stroke Association. Published by Elsevier Inc. All rights reserved.
