title: Cervical disc herniation producing acute Brown-Sequard syndrome: dynamic changes documented by intraoperative neuromonitoring.
abstract: BACKGROUND
  Brown-Sequard syndrome is an incomplete spinal cord lesion characterized by ipsilateral loss of motor function and contralateral loss of pain and temperature sensitivity, reflecting a hemi-compression or hemi-section of the spinal cord. Cervical disc herniation is an exceptional cause of this syndrome.
  
  
  METHODS
  We report a case of cervical disc herniation causing Brown-Sequard syndrome in a patient with an unusually rapid neurological deterioration associated to cervical extension, which was documented by neuromonitoring.
  
  
  CONCLUSIONS
  A prompt diagnosis, followed by spinal cord decompression should be warranted. Intraoperative neuromonitoring is a useful tool in preservation of neurologic function in these cases.
authors.affiliation: Department of Orthopaedic Surgery, Pontificia Universidad Catolica de Chile, Marcoleta 352, Santiago, Chile. jurrutia@med.puc.cl
authors.forename: Julio
authors.initials: J
authors.lastname: Urrutia
authors.forename: Ricardo
authors.initials: R
authors.lastname: Fadic
mesh_terms: D018437:Brown-Sequard Syndrome / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D002574:Cervical Vertebrae / Q000601:surgery; D017586:Diskectomy; D019054:Evoked Potentials, Motor / Q000502:physiology; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D013123:Spinal Fusion; D016896:Treatment Outcome