hydranencephaly

How Many Types Of Hydrocephalus Are There? The two major types of hydrocephalus are called communicating hydrocephalus and non-communicating hydrocephalus. Communicating hydrocephalus occurs when the flow of CSF is blocked after it exits the ventricles. What are 4 types of hydrocephalus? The four types of hydrocephalus are communicating, noncommunicating, ex vacuo, and normal pressure. Diagnosis