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Lateralization of epileptiform discharges in patients with epilepsy and precocious destructive brain insults.
Teixeira, Ricardo A; Li, Li M; Santos, Sergio L M; Amorim, Bárbara J; Etchebehere, Elba C S C; Zanardi, Verônica A; Guerreiro, Carlos A M; Cendes, Fernando.
Afiliação
  • Teixeira RA; Department of Neurology, State University of Campinas, Campinas, SP, Brazil.
Arq Neuropsiquiatr ; 62(1): 1-8, 2004 Mar.
Article em En | MEDLINE | ID: mdl-15122425
Unilateral destructive brain lesions of early development can result in compensatory thickening of the ipsilateral cranial vault. The aim of this study was to determine the frequency of these bone changes among patients with epilepsy and precocious destructive lesions, and whether a relationship exists between these changes and epileptiform discharges lateralization. Fifty-one patients had their ictal / interictal scalp EEG and skull thickness symmetry on MRI analyzed. Patients were divided into three main groups according to the topographic distribution of the lesion on the MRI: hemispheric (H) (n=9); main arterial territory (AT) (n=25); arterial borderzone (Bdz) (n=17). The EEG background activity was abnormal in 26 patients and were more frequent among patients of group H (p= 0.044). Thickening of the skull was more frequent among patients of group H (p= 0.004). Five patients (9.8%) showed discordant lateralization between epileptiform discharges and structural lesion (four of them with an abnormal background, and only two of them with skull changes). In one of these patients, ictal SPECT provided strong evidence for scalp EEG false lateralization. The findings suggest that compensatory skull thickening in patients with precocious destructive brain insults are more frequent among patients with unilateral and large lesions. However, EEG lateralization discordance among these patients seems to be more related to EEG background abnormalities and extent of cerebral damage than to skull changes.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Crânio / Encéfalo / Epilepsia Limite: Adolescent / Adult / Female / Humans / Male / Middle aged Idioma: En Revista: Arq Neuropsiquiatr Ano de publicação: 2004 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Crânio / Encéfalo / Epilepsia Limite: Adolescent / Adult / Female / Humans / Male / Middle aged Idioma: En Revista: Arq Neuropsiquiatr Ano de publicação: 2004 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha