Neurological Surgery 脳神経外科48巻12号

2020年12月発行

症例

後頭顆骨棘と頚部後屈により椎骨動脈閉塞を来したpositional vertebral artery occlusionの1手術例

著者： 大木聡悟¹² 岩﨑素之¹ 山崎和義² 高宮宗一朗² 越前谷すみれ¹ 月花正幸¹ 古川浩司¹ 新谷好正¹ 馬渕正二¹

所属機関： ¹小樽市立病院脳神経外科 ²北海道大学大学院医学研究科・医学部脳神経外科

ページ範囲：P.1177 - P.1182

Ⅰ．はじめに
　Positional vertebral artery occlusion（PVAO）とは，頭位変換に伴う椎骨動脈の閉塞であり，稀な疾患群である．代表的なものでは，Bow Hunter症候群（BWSy）が知られており，頚椎の回旋運動に伴う椎骨動脈の狭窄または閉塞により，後方循環不全を呈する¹⁹⁾．頚部の回旋運動に伴う椎骨動脈の機械的閉塞を来す症例の報告は多々見受けられるが^3,5,10,11)，頚部の屈曲や伸展に伴う椎骨動脈閉塞を来す症例はほとんどない¹⁶⁾．
　今回われわれは，頚部後屈で後頭顆骨棘による椎骨動脈水平部（V3）での閉塞に伴い，後方循環系の多発脳梗塞を来した症例を経験したので報告する．

参考文献

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