title: Localising value of primary position upbeating nystagmus.
abstract: Primary position upbeating nystagmus has been associated clinically with intra-axial brainstem and cerebellar lesions but evidence for more precise localisation to the ponto-mesencephalic and ponto-medullary junctions is accumulating. We report the occurrence of primary position upbeating nystagmus in three patients who had clinical signs of pontine lesions at the ponto-mesencephalic and ponto-medullary junctions. Radiological confirmation was possible in two cases.
authors: Royal Perth Hospital, WA.
authors: G J
authors: GJ
authors: Hankey
authors: P L
authors: PL
authors: Silbert
authors: R H
authors: RH
authors: Edis
mesh_terms: D000328:Adult; D000368:Aged; D001921:Brain / Q000000981:diagnostic imaging; D001927:Brain Diseases / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D001933:Brain Stem / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000209:etiology*; D014057:Tomography, X-Ray Computed