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Dissecting Aneurysm of the Posterior Inferior Cerebellar Artery : Studied by Serial Angiography Yoichi YAMASHITA 1 , Shinkichi HAYASIH 1 , Hiroaki SAITHO 1 , Akira TERAMOTO 2 1Department of Neurosurgery, Kosei Hospital 2Department of Neurosurgery, Nippon Medical School Keyword: posterior inferior cerebellar artery , dissecting aneurysm , hemorrhagic infarction pp.1057-1062
Published Date 2001/11/10
DOI https://doi.org/10.11477/mf.1436902125
  • Abstract
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We report the case of a 34-year-old male with cerebellar hemorrhagic infarction caused by a dissectinganeurysm of the left posterior inferior cerebellar artery (PICA). The patient suffered from a headache andvomiting for two days and was trasfered to our hospital with sudden deterioration of consciousness. Onadmission, he was semicomatose. A CT scan revealed hemorrhagic infarction in the left cerebellum and up-ward herniation. The emergency operation for posterior fossa decompression was performed. Postoper-atively, his consciousness level improved promptly and he had no neurological deficits except for slightgait disturbance. The first vertebral angiography was performed on Day 27. It showed a sausage-like dis-secting aneurysm of the left distal PICA. We planned conservative therapy with careful observation be-cause of there being no indication for an operation. Serial angiography was performed and demonstratedthe regression of the dissecting aneurysm on Day 258. Dissecting aneurysms of the distal PICA are rareand their natural history is not well understood. Conservative therapy for vertebrobasilar dissectinganeurysms has often been reported. We suggest that conservative therapy with serial angiography is thetreatment of choice especially for ischemic-type dissecting aneurysms. We review 17 cases of dissectinganeurysm of the distal PICA in this study.


Copyright © 2001, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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