Pathological Considerations for Unruptured Dissecting Aneurysm in the Posterior Inferior Cerebellar Artery: Case Report
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概要
- 論文の詳細を見る
Because of the wide spread of magnetic resonance image (MRI), it may be increasing to find a dissecting aneurysm (DA) of the posterior inferior cerebellar artery (PICA) that causes headache without associated hemorrhage or infarction. Generally, surgical treatment might be considered in cases of DA with hemorrhage. However, the treatment of an unruptured DA with headache or infarction has not been well established. This is the first report regarding the pathology of an intact DA of the PICA that presents with headache only, and the pathological findings showed interesting figures. A 44-year-old man with an unruptured DA of the left PICA presented with sudden left occipital headache. MRI revealed no hemorrhage or infarction. Magnetic resonance angiography (MRA) showed growth of the DA 12 days after the onset of headache. Therefore, surgery was performed to prevent aneurysmal rupture. This DA aneurysm was trapped and removed after an occipital artery (OA)-PICA anastomosis was performed. The surgery was performed without complication. Pathological findings showed folding of the internal elastic lamina, and the true lumen was torn by the false lumen. The dissection reached the adventitia and the wall had numerous macrophages. Pathological findings might help understanding the etiology of DAs and inflammation might play an important role in DAs.
- 一般社団法人 日本脳神経外科学会の論文
著者
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Kuroda Satoshi
Department Of Biology Faculty Of Science Yamagata University
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Hokari Masaaki
Department Of Neurosurgery Hokkaido University Graduate School Of Medicine
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Houkin Kiyohiro
Department Neurosurgery Sapporo Medical University School Of Medicine
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Takikawa Shugo
Department Of Neurosurgery Hokkaido University School Of Medicine
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Nakayama Naoki
Department of Cardiovascular Medicine, Faculty of Life Sciences, Kumamoto University
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Hokari Masaaki
Department of Neurosurgery, Graduate School of Medicine, Hokkaido University
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Miyamoto Michiyuki
Department of Neurosurgery, Chitose City Hospital
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Kuroda Satoshi
Department of Neurosurgery, Graduate School of Medicine, Hokkaido University
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