Asymmetric ventriculomegaly, interhemispheric cyst and dysgenesis of the corpus callosum (AVID)
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Asymmetric ventriculomegaly, interhemispheric cyst and dysgenesis of the corpus callosum (AVID) is a recently recognised 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.
-<li>macrocephaly</li>-</ul><h5>Associations</h5><p>Other congenital abnormalities may be present, including <a title="Dandy-Walker malformation" href="/articles/dandy-walker-malformation-1">Dandy-Walker malformation</a>, <a title="Grey matter heterotopia" href="/articles/grey-matter-heterotopia">grey matter heterotopia</a> or <a title="polymicrogyria" href="/articles/polymicrogyria">polymicrogyria</a>.</p><h4>Treatment and prognosis</h4><p>Variable but generally severe neurologic and developmental delay.</p>- +<li><a title="Macrocephaly" href="/articles/macrocephaly">macrocephaly</a></li>
- +</ul><h5>Associations</h5><p>Other congenital abnormalities may be present, including <a href="/articles/dandy-walker-malformation-1">Dandy-Walker malformation</a>, <a href="/articles/grey-matter-heterotopia">grey matter heterotopia</a> or <a href="/articles/polymicrogyria">polymicrogyria</a>.</p><h4>Treatment and prognosis</h4><p>Variable but generally severe neurologic and developmental delay.</p>
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Image 1 MRI (T2) ( create )
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