title: Cervical subarachnoid hematoma of unknown origin: case report.
abstract: OBJECTIVE
  Spontaneous spinal subarachnoid hematoma is rare, having been reported in the English literature in only seven other cases. We describe the first case of spontaneous subarachnoid hematoma located in the cervical spinal cord of a 43-year-old man. The pathologic examination showed no apparent source of bleeding, but there was evidence of cervical spondylotic myelopathy.
  
  
  METHODS
  The patient presented with a 10-day history of severe neck pain, followed by the onset of quadriparesis that was more evident on the left side, urinary retention, and sensory loss below C5. His medical history included hypertension. Magnetic resonance imaging showed a massive hemorrhage in the cervical spinal canal.
  
  
  METHODS
  A C4-C5 subarachnoid hematoma was removed. The patient died due to respiratory distress and uncontrollable hypotension on day 6 after surgery. Surgical exploration, neuroradiologic examinations, and autopsy showed no evidence of vascular malformations, tumors, or other possible sources of bleeding.
  
  
  CONCLUSIONS
  After excluding more common causes of spontaneous subarachnoid hematoma in this patient, we suggest that chronic spinal cord compression (spondylotic myelopathy) and arterial hypertension in this patient may have caused the pathogenesis of this rare clinical entity. Experimental data supporting this hypothesis are discussed.
authors.affiliation: Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0515, USA.
authors.forename: A
authors.initials: A
authors.lastname: Romano
authors.forename: M
authors.initials: M
authors.lastname: Marsella
authors.forename: N
authors.initials: N
authors.lastname: Swamy
authors.forename: G
authors.initials: G
authors.lastname: de Courten-Myers
authors.forename: M
authors.initials: M
authors.lastname: Zuccarello
mesh_terms: D000328:Adult; D002574:Cervical Vertebrae; D017809:Fatal Outcome; D006406:Hematoma / Q000209:etiology*; D006801:Humans; D006973:Hypertension / Q000150:complications; D008297:Male; D013117:Spinal Cord Compression / Q000150:complications* / Q000473:pathology; D013128:Spinal Osteophytosis / Q000150:complications* / Q000473:pathology; D013345:Subarachnoid Hemorrhage / Q000209:etiology*