agyria


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lissencephaly

 [lis″en-sef´ah-le]
agyria. adj., adj lissencephal´ic.

a·gy·ri·a

(ā-jī'rē-ă),
Congenital lack or underdevelopment of the convolutional pattern of the cerebral cortex.
[G. a- priv. + gyros, circle]

agyria

/agy·ria/ (a-ji´re-ah) a malformation in which the convolutions of the cerebral cortex are not fully formed, so that the brain surface is smooth.agyr´ic

agyria

[əjī′rē·ə]
a congenital lack or underdevelopment of the convolutionary pattern of the cerebral cortex. The cortical tissue is reduced, leading to severe mental retardation. Also called lissencephalia, lissencephaly.

agyria

Complete absence of cerebral gyri.

a·gy·ri·a

(ā-jī'rē-ă)
Congenital lack or underdevelopment of the convolutional pattern of the cerebral cortex.
Synonym(s): lissencephalia.
[G. a- priv. + gyros, circle]

agyria

References in periodicals archive ?
In pacygyria, there are areas where the brain is smooth, but it does not involve the complete agyria that is present in lissencephaly.
Agyria (complete lissencephaly) or pachygyria (incomplete lissencephaly) as well as a thickened cerebral cortex are seen on imaging studies, differentiating lissencephaly from malformations of neuronal proliferation (Figure 23).
Based on the findings of the published reports, it appears three patterns of abnormalities are associated with maternal parvovirus B19 infection: positional limb deformities, radiographic evidence of intercranial calcifications, and dysplastic changes, including agyria, macrogyria, polymicrogyria, and dysgenesis of the corpus callosum, he said.
But in some cases of ventriculomegaly, there can also be early manifestation of other anomalies such as hydrocephalus and agyria.