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

Last revised by Henry Knipe on 02 Feb 2022

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

Radiographic features

Associations

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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Cases and figures

  • Case 1
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  • Case 2
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