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Reorganization of the primary somatosensory area in epilepsy associated with focal cortical dysplasia

Published online by Cambridge University Press:  13 February 2001

Kenjiro Gondo ,
Ryutaro Kira ,
Yoichi Tokunaga ,
Chie Harashima ,
Shozo Tobimatsu ,
Tomoya Yamamoto  and
Toshiro Hara
Kenjiro Gondo
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Ryutaro Kira
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Yoichi Tokunaga
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Chie Harashima
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Shozo Tobimatsu
Affiliation:
Department of Clinical Neurophysiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Tomoya Yamamoto
Affiliation:
Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Toshiro Hara
Affiliation:
Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
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Abstract

A 5-year-old boy with focal cortical dysplasia was referred to our hospital because of epileptic seizures. He showed mild weakness of the left hand without sensory disturbance. Brain MRI revealed extensive cortical dysplasia with pachygyria and microgyria around the right central sulcus. On EEG examination, interictal spikes were noted over the right fronto/centro/parietal region. A 37-channel magnetometer revealed that the sources of the spikes were in a small, restricted region of the normal frontal lobe adjacent to the dysplastic brain. Somatosensory evoked magnetic fields indicated that the location of the current source of N20 was in the same area. Our patient shows a unique case of plasticity and reorganization of the somatosensory function due to cortical dysplasia.

Type
Case Reports
Information
Developmental Medicine and Child Neurology , Volume 42 , Issue 12 , December 2000 , pp. 839 - 842
Copyright
© 2000 Mac Keith Press

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