title: Vertebral Artery Dissection Leading to Fornix Infarction: A Case Report.
abstract: BACKGROUND
  The subcallosal artery is a proximal branch of the anterior communicating artery and has been recognized as the vessel responsible for fornix infarction. Fornix infarction caused by vascular damage to the posterior circulation has not been reported previously.
  
  
  RESULTS
  A 26-year-old woman suffered from fornix infarction due to artery-to-artery embolism after vertebral artery dissection. Cerebral infarctions were also found in the left thalamus, body of the left caudate nucleus, and the left occipital lobe other than the fornix.
  
  
  CONCLUSIONS
  Occlusion of the subcallosal artery results in cerebral infarction of fornix, anterior cingulate cortex, and genu of the corpus callosum. However, in our case, lesions were restricted to the territory of posterior circulation. In addition to subcallosal artery, lateral posterior choroidal artery, a perforating branch of the posterior cerebral artery, has been described to send branches to the fornix, so we speculated that the left lateral posterior choroidal artery was actually responsible for fornix infarction.
authors.affiliation: Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan. Electronic address: tkurokawa2006@yahoo.co.jp.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kurokawa
authors.affiliation: Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Baba
authors.affiliation: Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan.
authors.forename: Kimihiro
authors.initials: K
authors.lastname: Fujino
authors.affiliation: Department of Neurology, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan; Medical Office, Ministry of Finance, Tokyo, Japan; Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kuroiwa
authors.affiliation: Department of Neurosurgery, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Tomita
authors.affiliation: Department of Neurosurgery, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakane
authors.affiliation: Department of Neurosurgery, University Hospital Mizonokuchi, Teikyo University School of Medicine, Kawasaki, Japan.
authors.forename: Shoko Merrit
authors.initials: SM
authors.lastname: Yamada
authors.affiliation: Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Tanaka
mesh_terms: D000328:Adult; D002533:Cerebral Angiography / Q000379:methods; D002560:Cerebrovascular Circulation; D038524:Diffusion Magnetic Resonance Imaging; D005260:Female; D020712:Fornix, Brain / Q000098:blood supply*; D006801:Humans; D007238:Infarction / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology / Q000534:rehabilitation; D020766:Intracranial Embolism / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D018810:Magnetic Resonance Angiography; D016896:Treatment Outcome; D020217:Vertebral Artery Dissection / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology
keywords: Vertebral artery dissection; amnesia; cerebral embolism; fornix infarction; lateral posterior choroidal artery; posterior circulation