Main clinical features
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brain malformation characterized by infolding of cortical gray matter along a hemispheric cleft near the primary cerebral fissures :
. type I : schizencephaly consists of a fused cleft, forming a furrow in the developing brain, and lined by polymicrogyric gray matter, associated to seizures and spasticity
. type II : schizencephaly, consisting in a holohemispheric cleft in the cerebral cortex filled with fluid and lined by polymicrogyric gray matter, usually associated to mental retardation, seizures, hypotonia, spasticity, inability to walk or speak, and blindness |