Page 41 - SONO 260 The Fetal Head and Brain
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CEREBRAL MALFORMATIONS DANDY-WALKER MALFORMATION & MEGA CISTERNA MAGNA
The cerebellar vermis is either completely absent or hypoplastic.
As a result, the tentorium, the structure that separates the cerebrum from the cerebellum, is elevated.
There are often other midline brain abnormalities present as well.
For instance, agenesis of the corpus callosum, ventriculomegaly, holoprosencephaly, and cephaloceles are all associated anomalies that can co-exist with DWM.