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Pediatr Neurol. 1998 Mar;18(3):269-71.

MRI diagnosis of NF-1 in children without café-au-lait skin lesions.

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Department of Neurology, Bascom Palmer Eye Institute, University of Miami School of Medicine, Florida, USA.


Three of ten children with optic gliomas satisfy the 1987 National Institutes of Health consensus criteria for neurofibromatosis type 1 (NF-1). The diagnosis in these cases is based on the presence of café-au-lait skin lesions in addition to the optic glioma. Two children without skin lesions have typical findings on magnetic resonance imaging (MRI) that also suggest a diagnosis of NF-1. A review of 281 NF-1 children with brain MRI results demonstrates the presence of these abnormalities in 57% of the cases. It is suggested that this MRI abnormality is sufficiently specific to add this feature to the list of diagnostic criteria. When MRI findings are present in a child with optic glioma and without skin lesions, counseling should be given for NF-1. It is noteworthy that these typical MRI findings in NF-1 are less common in adulthood, apparently because of spontaneous resolution.

[Indexed for MEDLINE]

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