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Dementia with leucoaraiosis and dural arteriovenous malformation: clinical and PET case study.
  1. P Nencini,
  2. D Inzitari,
  3. J Gibbs,
  4. S Mangiafico
  1. Department of Neurological and Psychiatric Sciences, University of Florence, Italy.


    A case of rapidly progressive dementia with diffuse leucoaraiosis on CT was attributable to a supratentorial dural arteriovenous malformation. Positron emission tomography (PET) showed low cerebral blood flow and high oxygen extraction ratio throughout the cerebral hemispheres indicating a state of chronic haemodynamic compromise which could predispose to the development of a vascular dementia. CT images of dilated intracerebral veins suggested that a venous drainage overload rather than a vascular steal phenomenon might be involved in the pathophysiology of the dementia of vascular origin.

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