Asymmetric ventriculomegaly, interhemispheric cyst and dysgenesis of the corpus callosum (AVID)

Last revised by Henry Knipe on 2 Feb 2022

Asymmetric ventriculomegaly, interhemispheric cyst, and dysgenesis of the corpus callosum (AVID) is a triad of congenital cerebral anomalies.

Radiographic features


Other congenital abnormalities may be present, including Dandy-Walker malformation, grey matter heterotopia or polymicrogyria.

Treatment and prognosis

Variable but generally severe neurologic and developmental delay.

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