Arnold-Chiari malformation in a geriatric patient.
Downbeat nystagmus was the salient clinical manifestation of an Arnold-Chiari malformation in the 74-year-old woman we have described. Interesting features included the patient's age at the time of diagnosis, the sensitivity of downbeating nystagmus as a localizing neuro-ophthalmologic sign, and the value of metrizamide cisternography in defining lesions of the craniocervical junction.
D000368:Aged; D001139:Arnold-Chiari Malformation / Q000175:diagnosis / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D009192:Myelography; D009759:Nystagmus, Pathologic / Q000209:etiology