Which is the most common cause of ventriculomegaly in newborn?: (A) Dandy Walker syndrome, (B) Arnold Chiari malformation, (C) Aqueductal stenosis, (D) Arachnoid villi malfunction
Answer is C. - Ventriculomegaly is seen in neonates with hydrocephalus. - Obstructive or noncommunicating hydrocephalus develops most commonly in children d/t abnormality of aqueduct of Sylvius or a lesion in the fouh ventricle. - Nonobstructive or communicating hydrocephalus most commonly follows a subarachnoid hemorrhage, which is usually a result of intraventricular hemorrhage in a premature infant.