title: Acute transient freezing of gait in a patient with posterior reversible encephalopathy syndrome.
abstract: BACKGROUND
  Posterior reversible encephalopathy syndrome (PRES) is a transient clinical and neuroradiologic syndrome caused by cerebral vasogenic edema. Various reversible neurologic symptoms were shown in patients with PRES. Freezing of gait (FOG) is mainly observed in neurodegenerative diseases.
  
  
  METHODS
  We report a 43-year-old man, with undergoing hemodialysis therapy for chronic renal failure, had mild elevation of blood pressure. His consciousness level suddenly deteriorated, and brain MRI demonstrated hyperintense lesions in the bilateral basal ganglia on fluid-attenuated inversion recovery images, diffusion-weighted images, and apparent diffusion coefficient maps. After improvement of disturbance of consciousness, he showed FOG accompanied by bradykinesia and postural instability. His FOG spontaneously improved concurrently with alleviation of basal ganglionic lesions on follow-up MRI.
  
  
  CONCLUSIONS
  It is suggested that vasogenic edema on bilateral basal ganglia associated with PRES can cause acute transient FOG.
authors.affiliation: Department of Neurology, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan.
authors.forename: Asuka
authors.initials: A
authors.lastname: Nakajima
authors.forename: Yuji
authors.initials: Y
authors.lastname: Ueno
authors.forename: Hideki
authors.initials: H
authors.lastname: Shimura
authors.forename: Taiki
authors.initials: T
authors.lastname: Kambe
authors.forename: Kenya
authors.initials: K
authors.lastname: Nishioka
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Hattori
authors.forename: Takao
authors.initials: T
authors.lastname: Urabe
mesh_terms: D000328:Adult; D001921:Brain / Q000473:pathology; D038524:Diffusion Magnetic Resonance Imaging; D005500:Follow-Up Studies; D046352:Freezing Reaction, Cataleptic / Q000502:physiology*; D020233:Gait Disorders, Neurologic / Q000209:etiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D054038:Posterior Leukoencephalopathy Syndrome / Q000150:complications*