...A disease in which bilateral occlusive lesions are present from the end of the internal carotid artery in the skull to the origin of the anterior and middle cerebral arteries (circle of Willis), and an abnormal vascular network develops at the base of the brain as a compensatory collateral circulation. This name comes from the hazy appearance of the abnormal vascular network in cerebral angiography findings, but it is also called occlusive disease in circle of Willis. There are two theories about the origin of the abnormal vascular network: congenital and acquired, but it is still unknown. ... *Some of the terminology that refers to "occlusive disease in Circle of Willis" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…頭蓋内の内頸動脈終末部から前・中大脳動脈起始部(ウィリス動脈輪)が両側性に閉塞性病変を示し,代償的な側副血行路として脳底部に異常血管網が発達した病気。脳血管撮影上の所見で異常血管網の形態がもやもやとしているところからこの名があるが,ウィリス動脈輪閉塞症occlusive disease in circle of Willisとも呼ばれている。異常血管網の成因には先天性説と後天性説があるが,いまだ不明である。… ※「occlusive disease in circle of Willis」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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