title: Diffuse Subarachnoid Hemorrhage Secondary to Cerebral Venous Sinus Thrombosis.
abstract: BACKGROUND
  Aneurysmal rupture accounts for the majority of nontraumatic subarachnoid hemorrhage (SAH). Increasingly recognized is the occurrence of nontraumatic convexity SAH unaccounted for by aneurysmal rupture.
  
  
  METHODS
  These presentations require consideration of rare but clinically significant sources of SAH. We report a patient presenting with prolonged mild headaches and acute onset of seizure like activity found to have diffuse subarachnoid hemorrhage and extensive dural venous sinus thrombosis involving the superior sagittal sinus and right transverse-sigmoid sinuses.
  
  
  CONCLUSIONS
  There are few reported cases of SAH secondary to dural sinus thrombosis; however most of these are convexity hemorrhage. Sinus thrombosis presenting as diffuse SAH is extremely rare, as is showcased in this report.
authors.affiliation: Department of Neurosurgery, Penn State University, Hershey, PA, U.S.A.
authors.forename: Brian
authors.initials: B
authors.lastname: Anderson
authors.affiliation: Department of Radiology, Penn State University, Hershey, PA, U.S.A.
authors.forename: Shyamsunder
authors.initials: S
authors.lastname: Sabat
authors.affiliation: Department of Radiology, Penn State University, Hershey, PA, U.S.A.
authors.forename: Amit
authors.initials: A
authors.lastname: Agarwal
authors.affiliation: Department of Radiology, Penn State University, Hershey, PA, U.S.A.
authors.forename: Krishnamoorthy
authors.initials: K
authors.lastname: Thamburaj
keywords: Sinus Thrombosis, Intracranial; Subarachnoid Hemorrhage; Tomography, Spiral Computed