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Dysexecutive mild cognitive impairment associated to frontal atrophy: Case report

Comprometimento cognitivo leve por disfunção executiva associado a atrofia frontal: relato de caso

Abstract

Non-amnestic mild cognitive impairment (MCI) evolving to neurodegenerative diseases other than Alzheimer's disease (AD) is rarely well documented. We report a case of a 49 year-old woman who presented a slowly progressive attentional/dysexecutive syndrome sparing other cognitive domains and without significant impairment of daily life activities. Her mother had Parkinsonism and her brother, a psychotic syndrome. Brain CT/MRI showed frontal atrophy while brain SPECT showed moderate cortical hypoperfusion, mainly in the frontal lobes. Our case is an example of non-memory MCI whose neuropsychological data and brain imaging indicating high likelihood of progression to a non-AD dementia.

Key words:
mild cognitive impairment; executive function; Alzheimer's disease; frontotemporal dementia

Resumo

Comprometimento cognitivo leve não-amnéstico evoluindo para uma doença neurodegenerativa outra que não doença de Alzheimer é raramente documentado. Nós descrevemos o caso de uma mulher de 49 anos de idade que apresenta uma síndrome atencional/disexecutiva lentamente progressiva, sem acometimento de outros domínios cognitivos ou comprometimento significativo de atividades de vida diária, com antecedente familiar de parkinsonismo (sua mãe) e psicose (seu irmão). Tomografia e ressonância magnética cerebral mostram atrofia frontal e o SPECT, hipoperfusão cortical moderada, principalmente em lobos frontais. Nosso caso é um exemplo de comprometimento cognitivo leve cujo perfil neuropsicológico e de neuroimagem sugere que pode haver probabilidade maior de evoluir para uma doença neurodegenerativa não-DA.

Palavras-chave:
comprometimento cognitivo leve; função executiva; doença de Alzheimer; demência frontotemporal

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Publication Dates

  • Publication in this collection
    Jan-Mar 2008

History

  • Received
    08 Jan 2008
  • Reviewed
    02 Mar 2008
  • Accepted
    16 Feb 2008
Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento R. Vergueiro, 1353 sl.1404 - Ed. Top Towers Offices, Torre Norte, São Paulo, SP, Brazil, CEP 04101-000, Tel.: +55 11 5084-9463 | +55 11 5083-3876 - São Paulo - SP - Brazil
E-mail: revistadementia@abneuro.org.br | demneuropsy@uol.com.br