title: Spinal extradural arteriovenous fistula with intradural drainage: three surgical cases with long-term follow-up.
abstract: Spinal extradural arteriovenous fistulas (SEDAVF) with intradural drainage are uncommon vascular lesions that cause venous congestive myelopathy. We present three SEDAVF with intradural drainage treated with surgical disconnection of the intradural drainage via a single level laminectomy, followed by transarterial embolization (TAE) with Onyx if spontaneous thrombosis of the extradural fistula did not occur spontaneously. All patients improved their neurological condition and no congestive myelopathy recurrence was noted after mean follow-up of 84 months. We believe that SEDAVF with intradural drainage constitute a specific entity that should be included in the classifications of spinal arteriovenous malformations.
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain. kike_vazquez@hotmail.com.|Department of Neurosurgery, Clínica IMQ Zorrotzaurre, Bilbao, Biscay, Spain. kike_vazquez@hotmail.com.
authors.forename: Enrique J
authors.initials: EJ
authors.lastname: Vázquez
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain.|Department of Neurosurgery, Clínica IMQ Zorrotzaurre, Bilbao, Biscay, Spain.
authors.forename: Joaquín
authors.initials: J
authors.lastname: Gefaell
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain.
authors.forename: Leticia
authors.initials: L
authors.lastname: Fernandez
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain.|Department of Neurosurgery, Clínica IMQ Zorrotzaurre, Bilbao, Biscay, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: López
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain.|Department of Neurosurgery, Clínica IMQ Zorrotzaurre, Bilbao, Biscay, Spain.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Areitio
authors.affiliation: Department of Neurosurgery, Hospital Universitario Basurto, Avenida de Montevideo 18, 48013, Bilbao, Biscay, Spain.
authors.forename: Jose A
authors.initials: JA
authors.lastname: Elexpuru
mesh_terms: D000328:Adult; D000368:Aged; D020785:Central Nervous System Vascular Malformations / Q000601:surgery; D004322:Drainage / Q000009:adverse effects / Q000379:methods*; D004621:Embolization, Therapeutic / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000209:etiology; D007796:Laminectomy / Q000009:adverse effects / Q000379:methods*; D008297:Male; D011183:Postoperative Complications; D013118:Spinal Cord Diseases / Q000209:etiology
keywords: Dural arteriovenous fistula; Extradural arteriovenous fistula; Intradural venous drainage; Spinal arteriovenous malformation; Venous congestive myelopathy