title: Malignant solitary fibrous tumour of the orbit.
abstract: OBJECTIVE
  We aimed to report a case of orbital solitary fibrous tumour (SFT) in a child and to review the relevant literature.
  
  
  METHODS
  We describe an SFT in a 13-year-old boy with a 1-month history of painless proptosis in the left eye.
  
  
  RESULTS
  Magnetic resonance imaging revealed a well circumscribed mass filling most of the left intraconal orbit. The lesion was excised and histopathological examination revealed a malignant SFT. Postoperative follow-up for 18 months was uneventful.
  
  
  CONCLUSIONS
  Malignant SFT of the orbit should be included in the differential diagnosis of paediatric orbital tumours. Complete surgical excision remains the preferred method of management and the longterm prognosis is guarded.
authors.affiliation: Department of Oncology and Pathology, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden. leonard.girnita@ki.se
authors.forename: Leonard
authors.initials: L
authors.lastname: Girnita
authors.forename: Sven
authors.initials: S
authors.lastname: Sahlin
authors.forename: Abiel
authors.initials: A
authors.lastname: Orrego
authors.forename: Stefan
authors.initials: S
authors.lastname: Seregard
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005123:Eye / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D006393:Hemangiopericytoma / Q000175:diagnosis; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D054364:Solitary Fibrous Tumors / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D014057:Tomography, X-Ray Computed