title: Spontaneous intracranial hypotension: clinical presentation, imaging features and treatment.
abstract: OBJECTIVE
  In the present study, the authors investigated the clinical and imaging features as well as the therapeutic outcomes of SIH (spontaneous intracranial hypotension) patients.
  
  
  METHODS
  A retrospective review of 12 SIH patients was carried out. The diagnostic work-up included lumbar tapping and measurement of CSF opening pressure, radioisotope cisternography, brain and spinal magnetic resonance imaging (MRI), and computed tomography (CT) myelography. Autologous epidural blood patching was performed in patients who did not respond to conservative therapies, including analgesics, steroids, hydration and rest.
  
  
  RESULTS
  Typical postural headache was found in 11 (91%) patients. Nine (75%) patients showed pachymeningeal enhancement on their initial T1-weighted MR images. The CSF opening pressure was less than 60 mmH(2)O in 9 of 11 patients. Autologous epidural blood patching was performed in 7 patients, and all of them showed good responses.
  
  
  CONCLUSIONS
  SIH can present with various clinical presentations and neuroimaging findings. Autologous epidural blood patching is thought to be the treatment of choice for patients with SIH.
authors.affiliation: Department of Neurosurgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
authors.forename: Eun-Soo
authors.initials: ES
authors.lastname: Park
authors.forename: Ealmaan
authors.initials: E
authors.lastname: Kim