title: Parinaud's syndrome in hydrocephalus due to a basilar artery aneurysm.
abstract: A 65-year-old woman appeared with a progressive dementia, gait disturbance, and Parinaud's syndrome. A computed tomography scan, an angiogram of the vertebral artery, and metrizamide ventriculography demonstrated a marked hydrocephalus. A giant aneurysm at the termination of the basilar artery projected into the third ventricle producing partial obstruction of the aqueduct. The symptoms were resolved by a ventriculoperitoneal shunt; but after a month, the patient again showed the upward-gaze palsies concomitant with occurrence of shunt malfunction. The possible mechanisms of Parinaud's syndrome observed in the patient are discussed.
mesh_terms: D000368:Aged; D001488:Basilar Artery / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging / Q000209:etiology*; D002532:Intracranial Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D009886:Ophthalmoplegia / Q000000981:diagnostic imaging / Q000209:etiology*; D013577:Syndrome; D014057:Tomography, X-Ray Computed