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Aetiology of non-communicating hydrocephalus

Authoring team

Classification: Congenital:

  • atresia, stenosis, forking, or gliosis of the aqueduct of Sylvius
  • atresia of foramina of Magendie or Luschka - the Dandy-Walker syndrome
  • obstruction of 4th ventricular outflow - Arnold Chiari malformation
  • aneurysm of vein of Galen

Acquired:

  • aqueduct stenosis - due to adhesions following infection or haemorrhage
  • supratentorial masses causing tentorial herniation
  • intraventricular haematoma
  • tumours:
    • intraventricular - meningioma, colloid cysts, ependymona
    • parenchymal - pineal region, posterior fossa
  • abscesses and granuloma
  • arachnoid cysts
  • cerebellar haemorrhage

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