[Sylvian aqueduct syndrome].
D002535:Cerebral Aqueduct; D002551:Cerebral Ventricle Neoplasms / Q000150:complications; D006801:Humans; D018241:Neuroectodermal Tumors, Primitive, Peripheral / Q000150:complications; D009759:Nystagmus, Pathologic / Q000209:etiology*; D013577:Syndrome