title: Spontaneous occlusion of the frontal arteriovenous malformation and the following progression of the associated aneurysm: a case report.
abstract: We report the case of a 59-year-old women with a cerebral arteriovenous malformation (AVM) in the right frontal lobe, which was detected incidentally. Additionally, an aneurysm was found at the feeding artery of the AVM. The patient was treated conservatively. Nine years later, the nidus of the AVM was no longer detectable. The angiography showed the associated aneurysm growing irregularly with a daughter sac. The spontaneous occlusion of an AVM and the following progression of an associated aneurysm are rare. The possible mechanisms leading to the occlusion of the AVM and the progression of the associated aneurysm are discussed.
authors.affiliation: Department of Neurosurgery, Jichi Medical University, Shimotsuke, Tochigi, Japan; Department of Neurosurgery, Sano Kousei General Hospital, Sano, Tochigi, Japan. Electronic address: r0818tk@jichi.ac.jp.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kobari
authors.affiliation: Department of Neurosurgery, Jichi Medical University, Shimotsuke, Tochigi, Japan; Department of Neurosurgery, Sano Kousei General Hospital, Sano, Tochigi, Japan.
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Nagai
authors.affiliation: Department of Neurosurgery, Jichi Medical University, Shimotsuke, Tochigi, Japan; Department of Neurosurgery, Haga Red Cross Hospital, Moka, Tochigi, Japan.
authors.forename: Satsuki
authors.initials: S
authors.lastname: Miyata
authors.affiliation: Department of Neurosurgery, Jichi Medical University, Shimotsuke, Tochigi, Japan.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Oguma
authors.affiliation: Department of Neurosurgery, Jichi Medical University, Shimotsuke, Tochigi, Japan.
authors.forename: Eiju
authors.initials: E
authors.lastname: Watanabe
mesh_terms: D002533:Cerebral Angiography; D038524:Diffusion Magnetic Resonance Imaging; D018450:Disease Progression; D005260:Female; D005625:Frontal Lobe / Q000098:blood supply*; D006801:Humans; D033162:Incidental Findings; D002532:Intracranial Aneurysm / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D002538:Intracranial Arteriovenous Malformations / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D008875:Middle Aged; D013997:Time Factors
keywords: Cerebral arteriovenous malformation; aneurysm; intra-arterial pressure; spontaneous occlusion