横静脈洞・S状静脈洞

Transverse Sinus・Sigmoid Sinus

Point

・横静脈洞-S状静脈洞部硬膜動静脈瘻を治療するため必要な解剖について，分岐する静脈を中心に理解を深める．

・過去の経静脈的塞栓術を行った症例から，合併症を起こさないような治療戦略の立て方を学ぶ．

・最近の経動脈的塞栓術を行った症例から，安全で根治的な治療戦略の立て方を学ぶ．

　The transverse sinus（TS）and sigmoid sinus（SS）are common sites for dural arteriovenous fistulas, and an understanding of vascular anatomy is important when developing treatment strategies. In recent years, transarterial embolization, with a liquid embolization material, has become the treatment of choice, preserving the sinus without extensive coil filling of the affected sinus. With this expansion of therapeutic options, we feel that an understanding of the microanatomy has become more important. For example, the exact site where the vein of Labbé joins the TS should be determined. This article focuses on the development and anatomy of the TS and SS and makes points that should be considered when treating dural arteriovenous fistulas.