title: Neurosyphilis and late onset mental changes in the elderly.
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D019965:Neurocognitive Disorders / Q000175:diagnosis / Q000209:etiology*; D009494:Neurosyphilis / Q000134:cerebrospinal fluid / Q000150:complications* / Q000175:diagnosis; D013129:Spinal Puncture