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KMID : 1150320210170020080
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Journal of Korean Society of Geriatric Neurosurgery
2021 Volume.17 No. 2 p.80 ~ p.83
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Unusual collateral channel of ruptured vertebral artery fusiform aneurysm involving the posterior inferior cerebellar artery: a case report
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Kim Kyung-Hoon
Kim Dae-Kyun
Jang Suk-Jung
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Abstract
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A 60-year-old female patient presented to the emergency department with comatose mentation. Brain computed tomography angiography revealed subarachnoid hemorrhage due to a ruptured right vertebral artery (VA) fusiform aneurysm originating from the posterior inferior cerebellar artery (PICA). Subsequent digital subtraction angiography confirmed that the PICA was supplied by collateral circulation via the ipsilateral posterior meningeal artery. Coil embolization of the ruptured VA fusiform aneurysm was performed. Generally, the PICA is involved in dissecting VA aneurysms, and a therapeutic strategy without reconstructive therapy could pose a significant risk of morbidity. However, this case, we could perform parent artery occlusion without bypass surgery or stenting because of the unusual collateral channel.
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KEYWORD
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Vertebral artery, Posterior inferior cerebellar artery, Aneurysm
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