髄膜腫摘出後にみられた外頸動脈および内頸動脈—静脈洞間A-V Fistulaの1例

A Case of Arteriovenous Communication between External and Internal Carotid Arteries and the Sinus after Removal of the Meningioma

　1951年，Fincher^2）が外傷性の中硬膜動脈と上錐体静脈洞の動静脈瘻を初めて報告したが，以来外傷に起因する外頸動脈，頭蓋内—浄脈洞間の動静脈瘻の報告が多数見られる．しかしながら特発性の外頸動脈の1枝，後頭動脈と頭蓋内静脈洞瘻の報告はまだ少なく，さらに内頚動脈と海綿静脈洞以外の静脈洞間の動静脈瘻を合併したものは比較的少ない．

　最近，我々は髄膜腫摘出後にみられた比較的稀な両側性後頭動脈と横静脈洞との動静脈瘻に内頸動脈のtentorial branch（Bernasconi-Cassinari artery）とS状静脈洞との動静脈瘻を合併した例を経験したので報告する．

A 60-year-old man was admitted with anosmia, memory disturbance and disorientation in 1971. He was diagnosed the left olfactory groove meningioma and received the removal of the tumor after ligation of the left external carotid artery.

Over the following two years he was admitted again with progressive memory disturbance and mental disord er in Aug. '73.

Physical examination disclosed no abnormalities except for slight hypertention. His CSF pressure was 120min H2O and pneumoencephalograms showed marked dilatation of the lateral ventricles.