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Journal of Korean Neurosurgical Society > Volume 41(3); 2007 > Article
Journal of Korean Neurosurgical Society 2007;41(3): 196-199.
doi: https://doi.org/10.3340/jkns.2007.41.3.196
Isolated Dissecting Posterior Inferior Cerebellar Artery Aneurysm.
Young Mok Park, In Bo Han, Jung Yong Ahn
1Department of Neurosurgery, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, Korea. jyahn@yumc.yonsei.ac.kr
2Department of Neurosurgery, Pundang CHA Hospital, College of Medicine, Pochon CHA University, Seongnam, Korea.
Dissecting aneurysms frequently involve the vertebral arteries and their branches, but those involving the posterior inferior cerebellar artery (PICA) and not vertebral artery at all are extremely rare. We present a case of an isolated dissecting aneurysm of the PICA without involvement of vertebral artery. A 54-year-old man presented with dizziness and headache. MR imaging of the brain showed a cerebellar infarction of the left PICA territory. MR angiographic and cerebral angiographic studies revealed a dissecting fusiform aneurysm involving the left proximal PICA. Subsequently, the patient underwent GDC embolization. A postembolization angiogram demonstrated complete obliteration of the aneurysm. In this report, the treatment modalities for this rare condition is described with review of the literature.
Key Words: Dissecting aneurysm; Posterior inferior cerebellar artery; Embolization
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