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イシグロ タイチ
ISHIGURO Taichi
石黒 太一 所属 医学部 医学科（附属八千代医療センター） 職種 准教授 |
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| 論文種別 | 症例報告 |
| 言語種別 | 英語 |
| 査読の有無 | 査読あり |
| 表題 | Feasibility of endovascular treatment for fetal-type posterior cerebral artery aneurysm with P1 segment aplasia: illustrative case. |
| 掲載誌名 | 正式名：Journal of neurosurgery. Case lessons 略 称：J Neurosurg Case Lessons ISSNコード：26941902/26941902 |
| 掲載区分 | 国外 |
| 巻・号・頁 | 10(18),pp.1 |
| 著者・共著者 | Jun-Ichi Nomura, Taichi Ishiguro, Kenichi Hodotsuka, Takakazu Kawamata |
| 発行年月 | 2025/11 |
| 概要 | BACKGROUND:Aneurysms of the fetal-type posterior cerebral artery (FPCA) are rare and often present with fusiform or dissecting morphology. Unlike the adult-type posterior cerebral artery (PCA), the FPCA can only be accessed through the internal carotid artery, limiting endovascular routes and device options. These anatomical and technical constraints often necessitate parent artery occlusion (PAO) as a treatment strategy; however, it carries a substantial risk of ischemic complications. The authors report a rare case of a ruptured FPCA aneurysm with ipsilateral P1 segment aplasia, treated successfully with stent-assisted coil embolization with preservation of anterograde FPCA flow.OBSERVATIONS:A 79-year-old woman presented with subarachnoid hemorrhage and impaired consciousness. Imaging revealed a fusiform aneurysm along the FPCA and aplasia of the ipsilateral P1 segment. Because of narrow vessel anatomy, dual microcatheter techniques were not feasible. After conservative management, the patient underwent stent-assisted coil embolization via a transcellular approach. The aneurysm was completely obliterated with preserved FPCA flow, and no ischemic complications occurred.LESSONS:A literature review suggests that aneurysms with saccular configuration and proximity to the P2 segment are favorable for selective coil embolization. Given the high risk of thalamic and occipital infarction associated with PAO, preserving FPCA flow should be prioritized when anatomically and technically feasible. https://thejns.org/doi/10.3171/CASE25556. |
| DOI | 10.3171/CASE25556 |
| PMID | 41183314 |