system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Acquired extra – cranial infection that causes aqueductal Stenosis is –
assistant
The correct answer is  Aqueductal stenosis -
Causes of acquired aqueductal stenosis

Neonatal meningitis                       o Intrauterine viral infections
Subarachnoid hemorrhage              o Mumps meningoencephalitis