Anatomo-functional study of the cerebellum in working memory in children treated for medulloblastoma.
J Neuroradiol
; 46(3): 207-213, 2019 May.
Article
em En
| MEDLINE
| ID: mdl-30731145
ABSTRACT
INTRODUCTION:
Medulloblastoma is the most common malignant cerebral tumor during childhood, arising in the posterior fossa. Children treated for medulloblastoma often experience working memory (WM) deficits, affecting their quality of life and school performance. The aim of the present study undertaken to describe the cerebellar involvement in WM deficits observed in these children. MATERIAL ANDMETHODS:
23 healthy children and 11 children treated for medulloblastoma were included into study. All subjects performed a detailed neuropsychological examination, an anatomical and functional MRI. Stimuli were presented to the participants with alternating sensory modality and nature of communication in a block design during functional magnetic resonance imaging acquisitions. Non-parametric tests were used for analyzing neuropsychological and behavioral data. SPM8 and SUIT (Spatially Unbiased Atlas Template) were used for anatomical and functional MRI data analyses.RESULTS:
Patients had cerebellar resections mainly located in the left posterior lobe. Patients had significantly reduced intelligence quotient, central executive and visuospatial WM. In healthy children group, fMRI showed activations for non-verbal and visuospatial WM in the left posterior cerebellar lobe.CONCLUSION:
This study provides further evidence that left posterior cerebellar lobe plays a critical role in WM. Indeed, lesions of left posterior cerebellar lobe were associated with WM impairment in children treated for cerebellar medulloblastoma. Additionally, fMRI using WM tasks showed activation in the left posterior cerebellar lobe in healthy children. Taken together, these findings may help for improving treatment and rehabilitation of children referred for cerebellar tumor.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias Encefálicas
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Imageamento por Ressonância Magnética
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Doenças Cerebelares
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Meduloblastoma
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Memória de Curto Prazo
Tipo de estudo:
Clinical_trials
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Etiology_studies
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Risk_factors_studies
Limite:
Adolescent
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Child
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Female
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Humans
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Male
País/Região como assunto:
Europa
Idioma:
En
Revista:
J Neuroradiol
Ano de publicação:
2019
Tipo de documento:
Article