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  • Title: A case of early infantile epileptic encephalopathy (EIEE) with anatomical cerebral asymmetry and myoclonus.
    Author: Ogihara M, Kinoue K, Takamiya H, Nemoto S, Miyajima T, Hoshika A, Honda T, Takashima S, Genton P, Dravet C.
    Journal: Brain Dev; 1993; 15(2):133-9. PubMed ID: 8214333.
    Abstract:
    The authors report a case of early encephalopathy with myoclonus, tonic spasms and a suppression-burst pattern on electroencephalography (EEG) associated with unilateral cerebral hypertrophy following hemiatrophy. This patient showed frequent myoclonus in relation to a suppression-burst pattern resembling that in early myoclonic encephalopathy (EME). Moreover, the case also showed tonic spasms, from the age of 13 days, in series, as seen in Ohtahara syndrome. On the other hand, there was a previously undescribed peculiar CT scan finding, which showed hypertrophy of the right cerebral hemisphere at birth, following hemiatrophy. Neuropathological examination revealed cerebral atrophy associated with heterotopia and an ependymal hyperplasia in the right hemisphere, suggesting hemimegalencephaly. This case should be classified as Ohtahara syndrome accompanied by myoclonus, because of the spasms in series interrupting the suppression-burst pattern, and the etiological factor of brain malformation. The nosological aspects of this epileptic encephalopathy are discussed.
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