Page 29 - SONO 260 The Fetal Head and Brain
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  CEREBRAL MALFORMATIONS VENTRICULOMEGALY AND HYDROCEPHALUS
 The abnormal enlargement of the ventricles within the brain is referred to as ventriculomegaly.
— Hydrocephalus is typically reserved for cases of ventriculomegaly that are more severe and are caused by some type of obstruction to the flow of CSF.
— Therefore, obstructive hydrocephalus is the buildup of CSF within the ventricular system secondary to some type of obstruction.
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