Optic glioma presenting as spasmus nutans.
D001932:Brain Neoplasms / Q000175:diagnosis*; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005910:Glioma / Q000175:diagnosis*; D006801:Humans; D008297:Male; D009069:Movement Disorders / Q000175:diagnosis*; D009333:Neck; D009759:Nystagmus, Pathologic / Q000209:etiology; D009897:Optic Chiasm; D009900:Optic Nerve; D014786:Vision Disorders / Q000209:etiology