CT and pneumographic studies of membranous occlusion of the aqueduct of Sylvius. A case report

A case of membranous occlusion of the aqueduct of Sylvius with malformation of the skull and associated hydrocephalus is reported. The diagnosis was made with the help of CT, pneumoencephalography and ventriculography. In the literature membranous occlusion of the aqueduct has been considered to be a rare cause of hydrocephalus.