title: Protein S Deficiency and an Adult Case with Moyamoya Syndrome that Presented with Primary Intraventricular Haemorrhage.
abstract: BACKGROUND
  Moyamoya syndrome associated with protein S deficiency is rarely encountered and is usually reported in paediatric cases with cerebral ischaemia.
  
  
  METHODS
  A 32-year-old woman had symptoms of sudden-onset severe headache, projectile vomiting, impaired consciousness, and slight neck stiffness. The computed tomography scan of her brain showed primary intraventricular haemorrhage, and the subsequent four vessel cerebral angiographies revealed stage 3 to 4 Moyamoya disease according to Suzuki and Takaku's angiographic classification. The coagulation profile showed the presence of protein S deficiency. The patient was treated with external ventricular drainage and conservative management until blood clot resolution. The patient was discharged with normal neurological examination findings after her initial impaired consciousness and orientation defect gradually recovered.
  
  
  CONCLUSIONS
  This case report would alert physicians to the possible coexistence of Moyamoya syndrome and protein S deficiency, even in adult cases presenting with primary intraventricular haemorrhage.
authors.affiliation: Department of Neurology, Gaziosmanpasa University Faculty of Medicine, Tokat, Turkey.
authors.forename: Betül
authors.initials: B
authors.lastname: Cevik
authors.affiliation: Department of Radiology, Eskişehir Osmangazi University Faculty of Medicine, Eskişehir, Turkey.
authors.forename: Berat
authors.initials: B
authors.lastname: Acu
authors.affiliation: Department of Neurology, Gaziosmanpasa University Faculty of Medicine, Tokat, Turkey.
authors.forename: Dürdane
authors.initials: D
authors.lastname: Aksoy
authors.affiliation: Department of Neurology, Gaziosmanpasa University Faculty of Medicine, Tokat, Turkey.
authors.forename: Semiha
authors.initials: S
authors.lastname: Kurt
keywords: Intraventricular haemorrhage; Moyamoya syndrome; protein S deficiency