特発性，両側性外頸動脈—海綿静脈洞瘻の3例

Three Cases of Spontaneous Bilateral External Carotid-cavernous Sinus Fistula (Dural Arteriovenous Shunts in the Region of the Cavernous Sinus) and Review of Reported Cases

はじめに

　内頸動脈—海綿静脈洞瘻はその原因の77％は外傷性であり，残りの大部分は動脈瘤の破裂によるものといわれ^6），その報告例も多い．また，外頸動脈—頭蓋内静脈洞瘻は1951年Fincher^4）が報告して以来，その報告例は数多く見られるようになった．一方特発性外頸動脈—海綿静脈洞瘻は今までその報告例は文献上20例未満しかなく^{1-3，5，8-11，13，14，17）}，稀な疾患である．ここに特発性かつ両側性外頸動脈—海綿静脈洞瘻を呈した3例を経験したので報告する．

Since Fincher reported a case with arteriovenous fistula between the external carotid artery and dural sinus, many type of cases have been reported.

On the other hand, so called the external carotid cavernous fistula has been recognized less 20 cases in literature. We have observed three additional cases of dural arteriovenous shunts in the region of the cavernous sinus.

Case 1. A 52 year old woman had suffered from left side sever headache.There was weakness of the left extraocular muscles and left ptosis. A bruit was heard over the left orbit. She was treated for hypertension since 38 year old. And she has no history of recent trauma.