<prompt> Acquired extra - cranial infection that causes Aqueductal Stenosis is -Bacterial endocarditisMumpsMeaslesStaphylococcal septicemia  <response>: Ans. is b i.e., Mumps Aqueductal stenosis ? Causes of acquired aqueductal stenosis o Neonatal meningitis o Intrauterine viral infections o Subarachnoid hemorrhage o Mumps meningoencephalitis 