title: Multinucleate cell angiohistiocytoma of the orbit.
abstract: OBJECTIVE
  A 31-year-old had a five-year history of painless progressive swelling of her right upper eyelid.
  
  
  METHODS
  A mass was removed from the superonasal aspect of the right orbit.
  
  
  RESULTS
  The orbital mass was composed of a collagenous stroma with capillary channels and irregular giant cells. The findings were characteristic of multinucleate cell angiohistiocytoma.
  
  
  CONCLUSIONS
  Multinucleate cell angiohistiocytoma should be included in the differential diagnosis of circumscribed orbital tumors.
authors.affiliation: Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Shields
authors.forename: R C
authors.initials: RC
authors.lastname: Eagle
authors.forename: C L
authors.initials: CL
authors.lastname: Shields
authors.forename: K K
authors.initials: KK
authors.lastname: Sohmer
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D009918:Orbital Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed