title: Orbital leiomyoma: a case report.
abstract: OBJECTIVE
  Leiomyoma is a benign tumor derived from smooth muscle, most frequently occurring in the uterus and gastrointestinal system. This report discusses clinical and pathologic findings in a 56-year-old man with orbital leiomyoma.
  
  
  METHODS
  Case review.
  
  
  RESULTS
  A lateral orbitotomy was performed. Immunohistochemical staining for actin and desmin was positive result. There was no evidence of recurrence during a two-year follow-up interval.
  
  
  CONCLUSIONS
  Leiomyoma is a benign tumor of low incidence because there is little smooth muscle in the orbit. The differential diagnosis must include any fully encapsulated orbital tumor. Prognosis after surgical excision is favorable.
authors.affiliation: Ophthalmology Department, Hospital de Clinicas José de San Martín, School of Medicine, University of Buenos Aires, Argentina.
authors.forename: D
authors.initials: D
authors.lastname: Badoza
authors.forename: D
authors.initials: D
authors.lastname: Weil
authors.forename: J
authors.initials: J
authors.lastname: Zárate
mesh_terms: D000199:Actins / Q000378:metabolism; D014408:Biomarkers, Tumor; D003893:Desmin / Q000378:metabolism; D003937:Diagnosis, Differential; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D008297:Male; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D000199:Actins; D014408:Biomarkers, Tumor; D003893:Desmin