Abstract
An 8-year-old boy underwent a resection for focal cortical dysplasia at the left supplementary motor area (SMA) for the treatment of intractable epilepsy. The manifestations of SMA syndrome, such as transient mutism and right hemiparesis, resolved within a few weeks. Verbal disfluency and impaired executive function, accompanied by impulsivity and distractibility, persisted for more than 12months. The verbal and behavioral problems caused serious difficulties in the school life of the patient, until they became less evident at 18months after surgery. Tractography performed 18months after surgery revealed a defect in the subportion of fronto-parietal association fibers within the left superior longitudinal fascicles. Verbal influency can persist with unusually long duration after resection of SMA during childhood. Although not discernible on the routine neuroimaging, white matter damage beneath the SMA region could result in serious disabilities in executive function. These complications should be recognized for the prediction and assessment of deficits in children after surgical intervention involving this region.
Published Version
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