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MR imaging and 1H-MR spectroscopy of a case of van der Knaap disease.

Authors
Type
Published Article
Journal
Brain and Development
0387-7604
Publisher
Elsevier
Publication Date
Volume
28
Issue
7
Pages
466–469
Identifiers
PMID: 16504440
Source
Medline

Abstract

Van der Knaap disease, characterized by megalencephalic leukoencephalopathy and subcortical cysts, is a rare and recently defined condition. We discuss here the MR image (MRI) and MR spectroscopy (MRS) features in a 30-year-old man with S93L homozygous mutation in the MLC1 gene. MRI demonstrated high intensity diffuse white matter with T2-weighted image and subcortical cysts in the parietal and temporal lobes and MRS showed mildly reduced N-acetylaspartate (NAA) in areas of severe T2 elongation with a long TE sequence. A peak of lactate/lipid was indicated at a chemical shift of 1.3 ppm with a short TE sequence. The peak for myo-inositol was normal in areas of severe and mild T2 elongation with short TE MRS. These findings suggest that demyelination progresses slowly in van der Knaap disease and that MRS with long and short TE is useful for the evaluation of neural metabolization associated with van der Knaap disease.

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