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A disease characterized by microcephaly, agenesis of corpus callosum, abnormal conformation of the ventricles and posterior fossa, hypoplasia of both cerebellar hemispheres, colpocephaly, and partial absence of the cerebellar vermis with fusion of the cerebellar hemispheres. Intellectual development is moderately to severely impaired. Bicoronal synostosis, scoliosis, and tethered cord may be present.




Mental retardation


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