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

Last revised by Henry Knipe ◉ on 2 Feb 2022

Citation, DOI, disclosures and article data

Citation:

Stanislavsky A, Knipe H, Rasuli B, et al. Asymmetric ventriculomegaly, interhemispheric cyst and dysgenesis of the corpus callosum (AVID). Reference article, Radiopaedia.org (Accessed on 23 Mar 2025) https://doi.org/10.53347/rID-48478

DOI:

https://doi.org/10.53347/rID-48478

Permalink:

https://radiopaedia.org/articles/48478

rID:

48478

Article created:

9 Oct 2016, Alexandra Stanislavsky ◉

Disclosures:

At the time the article was created Alexandra Stanislavsky had no recorded disclosures.

View Alexandra Stanislavsky's current disclosures

Last revised:

2 Feb 2022, Henry Knipe ◉

Disclosures:

At the time the article was last revised Henry Knipe had no recorded disclosures.

View Henry Knipe's current disclosures

Revisions:

8 times, by 6 contributors - see full revision history and disclosures

Systems:

Central Nervous System, Obstetrics

Sections:

Syndromes

Tags:

fetal brain, cases, case1

Synonyms:

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

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

Radiographic features

markedly asymmetric enlargement of the lateral ventricles may be the initial finding on routine fetal morphology ultrasound.
interhemispheric cyst
dysgenesis of the corpus callosum
absent cavum septum pellucidum
macrocephaly

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.

Quiz questions

References

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