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


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.

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Case 1
    Drag here to reorder.
  • Case 2
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.