title: Metastatic renal cell carcinoma presenting as a circumscribed orbital mass.
abstract: OBJECTIVE
  To report a case of renal cell carcinoma presenting as a well-circumscribed orbital tumor.
  
  
  METHODS
  Retrospective interventional case report.
  
  
  RESULTS
  A 60-year-old woman presented with proptosis of the left eye. Imaging showed a well circumscribed tumor in the region of the medial rectus muscle. Excision biopsy revealed a diagnosis of metastatic renal cell carcinoma that was confirmed on abdominal imaging.
  
  
  CONCLUSIONS
  Renal cell carcinoma can rarely present as a well-circumscribed orbital mass and should be included in the differential diagnosis of such lesions.
authors.affiliation: South Australian Institute of Ophthalmology and Department of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide - South Australia.
authors.forename: S Y
authors.initials: SY
authors.lastname: Mudiyanselage
authors.forename: V C
authors.initials: VC
authors.lastname: Prabhakaran
authors.forename: G J
authors.initials: GJ
authors.lastname: Davis
authors.forename: D
authors.initials: D
authors.lastname: Selva
mesh_terms: D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed