[Downbeat nystagmus and vertebrobasilar arterial dolichoectasia].
A 66-year-old man presented with a downbeat nystagmus. The underlying cause was unknown. A dolichoectasia of the vertebrobasilar artery was the only identifiable abnormality at Magnetic Resonance Image which also disclosed distortion of the anterolateral aspect of the medulla. Compression of the caudal brain-stem by an enlarged and tortuous vertebrobasilar arterial system may be the cause of downbeat nystagmus in cases unassociated with the more commonly recognized causes.
Krespi
Y
Y
Clinique Neurologique, Hôpital Beaujon, Clichy.
Verstichel
P
P
Masson
C
C
Cambier
J
J
D000368:Aged; D004108:Dilatation, Pathologic; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008526:Medulla Oblongata; D009759:Nystagmus, Pathologic / Q000209:etiology*; D014711:Vertebral Artery / Q000473:pathology*
Nystagmus battant vers le bas et dolichoectasie artérielle vertébrobasilaire.