title: [Spondylodiscitis in Bechterew's disease; inflammation or trauma? Description of 6 patients].
abstract: OBJECTIVE
  To study the prevalence and nature of sterile spondylodiscitis in patients suffering from ankylosing spondylitis.
  
  
  METHODS
  Descriptive.
  
  
  METHODS
  Department of Rheumatology, Medisch Spectrum Twente, Enschede, the Netherlands.
  
  
  METHODS
  Of all ankylosing spondylitis patients suffering from sterile spondylodiscitis, the medical histories and the radiological and histological findings were analysed.
  
  
  RESULTS
  Among about 400 patients, 6 cases of sterile spondylodiscitis were found; 4 men and 2 women. The mean time lapse between diagnosis of ankylosing spondylitis and onset of spondylodiscitis symptoms was 7 years; in I patient discitis was the first symptom. Discitis changed the nature of the backache: it worsened during exercise and improved on resting. There was no history of trauma. Symptomatic and asyptomatic radiological abnormalities were seen at the same time in 2 patients. Symptoms disappeared 3-36 months after start of conservative treatment. Histological examination was performed in 2 cases and showed inflammatory changes.
  
  
  CONCLUSIONS
  Spondylodiscitis in ankylosing spondylitis has a highly variable presentation and in general a good prognosis. Our findings support an inflammatory rather than a traumatic pathogenesis.
authors.affiliation: Medisch Spectrum Twente, afd. Reumatologie, Enschede.
authors.forename: P J
authors.initials: PJ
authors.lastname: Lanting
authors.forename: J J
authors.initials: JJ
authors.lastname: Rasker
authors.forename: M W
authors.initials: MW
authors.lastname: Kruijsen
authors.forename: R L
authors.initials: RL
authors.lastname: Prevo
mesh_terms: D000328:Adult; D001706:Biopsy; D015299:Discitis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging; D013904:Thoracic Vertebrae
vernacular_title: Spondylodiscitis bij de ziekte van Bechterew; ontsteking of trauma? Een beschrijving van 6 patiënten.