title: [Spontaneous closure of dural arteriovenous fistula after performing diagnostic angiography].
abstract: The pathogenesis and clinical treatment of dural arteriovenous fistulas (DAVF) has been well established. However, only 15 cases of spontaneous closure of DAVFs have been reported. We describe a case of spontaneous closure of a DAVF. A 60-year-old male presented with pulsatile tinnitus. Selective cerebral angiography revealed a left posterior DAVF fed by the left occipital artery and the middle meningeal artery, which drained into the left transverse sinus and sigmoid sinus. Following the initial angiography, the patient exhibited vomiting with transient disorientation and amnesia. These symptoms, along with the tinnitus, disappeared by the following day. Seven days after the initial angiography, a second angiography was performed that revealed the complete disappearance of the DAVF. Previous reports have described a long period of closure for DAVFs following initial diagnosis. Possible mechanisms for spontaneous closure of DAVFs include the development of scar tissue or a sinus thrombosis that leads to occlusion of the DAVF In this case, the DAVF closure may have been due to a sinus thrombosis induced by sinus stenosis, since occlusion of the draining sinuses coincided with the spontaneous closure of the DAVF. In cases of non-traumatic DAVF without cortical venous reflex that do not present severe symptoms, a prudent course of treatment is necessary since there is a chance of spontaneous closure of the DAVF occuring.
authors.affiliation: Department of Neurosurgery, Fujigaoka Hospital, Showa University, 1-30 Fujigaoka, Aoba-ku, Yokohama, 227-8501, Japan. ns-mmoriya@showa-university-fujigaoka.gr.jp
authors.forename: Masao
authors.initials: M
authors.lastname: Moriya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Itokawa
authors.forename: Michio
authors.initials: M
authors.lastname: Fujimoto
authors.forename: Masayuki
authors.initials: M
authors.lastname: Noda
authors.forename: Goro
authors.initials: G
authors.lastname: Nagashima
authors.forename: Jun-Ichiro
authors.initials: J
authors.lastname: Asai
authors.forename: Ryuta
authors.initials: R
authors.lastname: Suzuki
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Fujimoto
mesh_terms: D020785:Central Nervous System Vascular Malformations / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D012075:Remission, Spontaneous