Non tumoral aqueduct stenosis and normal pressure hydrocephalus in the elderly.
D002535:Cerebral Aqueduct; D003251:Constriction, Pathologic / Q000175:diagnosis; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis*; D006850:Hydrocephalus, Normal Pressure / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed