title: Ectopic orbital meningioma: a case report and review.
abstract: OBJECTIVE
  To describe a well-documented case of ectopic orbital meningioma, to review the literature on the subject, and to recommend treatment.
  
  
  METHODS
  Neuroradiologic investigations were suggestive of orbital meningioma. The patient underwent total excision of the mass, which was subsequently examined by light microscopy and immunohistochemistry.
  
  
  RESULTS
  The patient was diagnosed with ectopic orbital meningioma which was locally invasive. The tumor was surgically excised, and did not recur during a 42-month follow-up interval.
  
  
  CONCLUSIONS
  Ectopic orbital meningiomas are rare tumors that develop from ectopic arachnoid tissue. Although locally invasive, the prognosis is favorable if the tumor is completely removed.
authors.affiliation: Department of Ophthalmology, Columbia University, New York, New York, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Farah
authors.forename: H
authors.initials: H
authors.lastname: Konrad
authors.forename: D T
authors.initials: DT
authors.lastname: Huang
authors.forename: C E
authors.initials: CE
authors.lastname: Geist
mesh_terms: D014408:Biomarkers, Tumor; D002828:Choristoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008578:Meninges; D008579:Meningioma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D008875:Middle Aged; D018396:Mucin-1 / Q000378:metabolism; D013508:Ophthalmologic Surgical Procedures; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014746:Vimentin / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; D018396:Mucin-1; D014746:Vimentin