title: Spinal toxoplasmic arachnoiditis associated with osteoid formation: a rare presentation of toxoplasmosis.
abstract: METHODS
  An extremely rare presentation of an isolated spinal toxoplasmic arachnoiditis is described.
  
  
  OBJECTIVE
  To draw attention to the fact that spinal arachnoid membranes may be a potential reservoir for Toxoplasma gondii.
  
  
  BACKGROUND
  Central nervous system toxoplasmosis is a common manifestation in patients who are immunodeficient. Reports on the spinal toxoplasmosis are rare and focused on spinal cord involvement.
  
  
  METHODS
  An adult patient presented with symptoms of spastic paraparesis that had begun 13 years before admission. Thoracic spinal magnetic resonance imaging showed small lesions in posterior subarachnoid space at Th7-Th8. A Th7-Th8 laminectomy was performed. Intradural-extramedullary lesions were excised.
  
  
  RESULTS
  Clinical, immunologic, and pathologic examinations showed adhesive spinal arachnoiditis associated with osteoid formation caused by past toxoplasmic infection. There was no impairment of the immunologic defense system.
  
  
  CONCLUSIONS
  Where no causative factor is found in serious spinal adhesive arachnoiditis, the possibility of spinal toxoplasmosis should also be investigated.
authors.affiliation: Department of Neurosurgery, Osmangazi University, Eskisehir, Turkey.
authors.forename: T E
authors.initials: TE
authors.lastname: Cosan
authors.forename: S
authors.initials: S
authors.lastname: Kabukcuoğlu
authors.forename: A
authors.initials: A
authors.lastname: Arslantas
authors.forename: M A
authors.initials: MA
authors.lastname: Atasoy
authors.forename: N
authors.initials: N
authors.lastname: Dogan
authors.forename: I
authors.initials: I
authors.lastname: Ozgunes
authors.forename: M
authors.initials: M
authors.lastname: Kebabci
authors.forename: E
authors.initials: E
authors.lastname: Tel
mesh_terms: D000328:Adult; D000818:Animals; D001100:Arachnoiditis / Q000150:complications / Q000175:diagnosis* / Q000469:parasitology; D002114:Calcinosis / Q000209:etiology / Q000469:parasitology / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D009999:Ossification, Heterotopic / Q000150:complications / Q000175:diagnosis* / Q000469:parasitology; D013118:Spinal Cord Diseases / Q000150:complications / Q000175:diagnosis* / Q000469:parasitology; D014122:Toxoplasma / Q000254:growth & development / Q000302:isolation & purification; D014123:Toxoplasmosis / Q000150:complications / Q000175:diagnosis*