Aqueduct stenosis and cystic expansion of the suprapineal recess.
D000328:Adult; D001927:Brain Diseases; D002552:Cerebral Ventricles; D014695:Cerebral Ventriculography; D003560:Cysts; D005260:Female; D006801:Humans; D008636:Mesencephalon; D010870:Pineal Gland