Occult hydrocephalus in the elderly.
D000367:Age Factors; D002557:Cerebrospinal Fluid Shunts; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis* / Q000453:epidemiology / Q000601:surgery; D007427:Intracranial Pressure; D008297:Male; D008396:Maryland; D008875:Middle Aged