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  • Title: Long-term neurocognitive and neuroimaging outcomes in posterior reversible encephalopathy syndrome: two case reports and implications.
    Author: Stroescu I, Salinas CM, Nahab FB, Stringer AY.
    Journal: Clin Neuropsychol; 2011 Nov; 25(8):1386-402. PubMed ID: 22050322.
    Abstract:
    Posterior reversible encephalopathy syndrome (PRES) is a neurotoxic and neurometabolic state associated with a distinct appearance on computed tomography and magnetic resonance imaging, as well as particular clinical features. While PRES is defined as a reversible condition, instances of irreversible or persisting cytotoxic edema have been reported and appear to be associated with poor outcomes. Studies addressing the post-acute neurocognitive findings in persisting/irreversible PRES are lacking. We report two cases of persisting PRES with associated neurocognitive deficits and functional limitations following acute presentation. Neuroimaging revealed abnormalities within the posterior parietal lobes, along with bilateral involvement of the occipital and frontal lobes. The results from the neuropsychological examination revealed a pattern of impairment generally affecting spatial-perceptual and related functions and aspects of executive function. These cases document instances of irreversible/persisting PRES with associated neurocognitive deficits and functional limitations generally corresponding with the areas implicated on neuroimaging. Studies addressing the post-acute neurocognitive presentation and functional outcomes of PRES are needed.
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