Journal
JOURNAL OF CHILD NEUROLOGY
Volume 15, Issue 2, Pages 90-96Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/088307380001500206
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Neurofibromatosis-l is a common autosomal-dominant genetic disorder associated with numerous physical anomalies and an increased incidence of attention-deficit hyperactivity disorder (ADHD). Studies of children with idiopathic ADHD have suggested a link between corpus callosum size and symptom severity. This study examines the contribution of corpus callosum morphology to symptoms of ADHD in children with neurofibromatosis. Eighteen control subjects and 36 children with neurofibromatosis underwent magnetic resonance imaging of the brain. Twelve subjects with neurofibromatosis had evidence of ADHD and 24 did not. Subjects with neurofibromatosis had significantly larger total corpus callosum area and significantly larger regional measurements in three of seven areas. However, there were no differences between the neurofibromatosis alone and neurofibromatosis plus ADHD groups, Increased severity of attention problems was associated with smaller total callosal areas. These results suggest that some features of ADHD in children with neurofibromatosis could be Linked to quantifiable differences in brain morphology but the nature of the genetic mutation in neurofibromatosis suggests that neurochemical effects also could be important.
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