title: Acute subdural hematoma without subarachnoid hemorrhage or intraparenchymal hematoma caused by rupture of a posterior communicating artery aneurysm: case report and review of the literature.
abstract: BACKGROUND
  Acute subdural hematoma without subarachnoid hemorrhage or intraparenchymal hematoma is rare.
  
  
  METHODS
  We report on a 47-year-old women without previous trauma who presented with an acute subdural hematoma without subarachnoid hemorrhage. The hematoma was evacuated immediately. Further evaluation with a cerebral four-vessel angiography revealed a left-sided posterior communicating artery aneurysm that was occluded by endovascular embolization. The patient recovered without neurological deficit.
  
  
  CONCLUSIONS
  Ruptured intracranial aneurysm should be considered as a cause of nontraumatic subdural hematoma. Immediate subdural hematoma removal after aneurysm coiling can be performed in such patients, even those in poor neurological condition.
authors.affiliation: Department of Neurosurgery, Medical University Graz, Austria.
authors.forename: Manuel
authors.initials: M
authors.lastname: Mrfka
authors.forename: Karin
authors.initials: K
authors.lastname: Pistracher
authors.forename: Michael
authors.initials: M
authors.lastname: Augustin
authors.forename: Senta
authors.initials: S
authors.lastname: Kurschel-Lackner
authors.forename: Michael
authors.initials: M
authors.lastname: Mokry
mesh_terms: D017542:Aneurysm, Ruptured / Q000000981:diagnostic imaging*; D004621:Embolization, Therapeutic; D004636:Emergency Service, Hospital; D005260:Female; D020199:Hematoma, Subdural, Acute / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy; D008875:Middle Aged; D014057:Tomography, X-Ray Computed