Neurologia medico-chirurgica
Online ISSN : 1349-8029
Print ISSN : 0470-8105
ISSN-L : 0470-8105
Case Reports
Multiple Aneurysms Arising From the Posterior Inferior Cerebellar Artery With Unknown Etiology
—Case Report—
Tetsuhiro KITAHARAHiroshi YONEDAShouichi KATOKouji KAJIWARATatsuo AKIMURAMichiyasu SUZUKI
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JOURNAL OPEN ACCESS

2005 Volume 45 Issue 10 Pages 523-525

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Abstract

A 67-year-old man presented with multiple aneurysms arising from the caudal loop of the posterior inferior cerebellar artery (PICA), possibly as a result of blunt trauma. Computed tomography of the head revealed subarachnoid hemorrhage in the posterior fossa and sylvian fissure. Repeated angiography demonstrated an aneurysmal dilatation and an irregular wall on the caudal loop of the PICA. Under the operating microscope, two lesions were observed 10 mm distal to the apex of the caudal loop, both consisting of a tiny hole on the vessel wall with a fragile fringe of connective tissue and covered with a firm clot. The height of the lesions corresponded to the C-l lamina, so the lesions were probably traumatic rather than saccular.

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© 2005 by The Japan Neurosurgical Society

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