title: The remnant of primary head sinus found in the case of dural arteriovenous fistula: A case report.
abstract: In the embryo, the primary head sinus (PHS) is the first venous drainage channel in the craniocervical region. During embryonic development, this channel regresses and usually disappears completely; accordingly, a remnant of the PHS is an extremely rare condition and has been described in only a few previous studies. Here, we report a case of remnant of the PHS with a dural arteriovenous fistula (dAVF) in an adult. The remnant of the PHS had penetrated the petrous bone to run from the middle fossa to the jugular bulb and served as a drain for the middle fossa dAVF. We used digital subtraction angiography and reconstructed cone-beam computed tomography in 3D rotational angiography to obtain detailed anatomic information about the remnant PHS and additionally scrutinised and discussed its features.
authors.affiliation: Department of Neurosurgery, Keio University School of Medicine, Japan katsu512@yahoo.co.jp.
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Mizutani
authors.affiliation: Department of Neurosurgery, Keio University School of Medicine, Japan.
authors.forename: Takenori
authors.initials: T
authors.lastname: Akiyama
authors.affiliation: Department of Neurosurgery, Keio University School of Medicine, Japan.
authors.forename: Kazunari
authors.initials: K
authors.lastname: Yoshida
mesh_terms: D000368:Aged; D015901:Angiography, Digital Subtraction; D020785:Central Nervous System Vascular Malformations / Q000000981:diagnostic imaging* / Q000628:therapy; D002533:Cerebral Angiography; D002550:Cerebral Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D054893:Cone-Beam Computed Tomography; D004621:Embolization, Therapeutic; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional
keywords: Primary head sinus; dural arteriovenous fistula; embryology