| 释义 |
lissencephaly type 3 lissencephaly type 3 A hereditary brain disorder (OMIM:611603) characterised by a smooth brain surface due to the absence (agyria) or reduction (pachygyria) of the cerebral gyri (surface convolutions); laminar heterotopia, usually associated with psychomotor retardation; severe mental retardation; variable presence of seizures; and defects of the corpus callosum, hippocampus, cerebellar vermis and brainstem. |