Q: What are the causes of Hydrocephalus?

A: The various causes of hydrocephalus are as follows:

Choroid plexus carcinoma with hydrocephalus:

A: Cerebral atrophy produces dilatation of ventricular system with proportionated dilatation of cortical sulci & CSF spaces. (sylvian fissure) Any obvious disproportionality should point towards abnormal enlargement. In hydrocephalus, frontal horn of lateral ventricles become rounded, balloon shaped, whereas in atrophy, ventricular shape does not change. The anterior angle between two lateral ventricles may increase in hydrocephalus & subependymal ooze also may be present. All these features, with clinical correlation will differentiate between atrophy & hydrocephalus.