title: Thymic carcinoma metastatic to the orbit.
abstract: OBJECTIVE
  To report a case of small cell carcinoma of the thymus metastatic to the orbit.
  
  
  METHODS
  At age 37 years, a man who had been previously diagnosed and treated for small cell carcinoma of the thymus was initially examined for vertical diplopia and left proptosis. Computed tomographic scan disclosed a soft tissue mass in the superior aspect of the left orbit. A fine-needle aspiration biopsy of the mass was performed and submitted for cytopathologic examination.
  
  
  RESULTS
  The cytopathology and immunopathology disclosed malignant cells consistent with metastatic small cell thymic carcinoma.
  
  
  CONCLUSIONS
  This is the first reported case of a primary thymus gland tumor metastatic to the orbit.
authors.affiliation: Oculoplastics and Orbital Service, McGill University, Montreal, Quebec, Canada.
authors.forename: F A
authors.initials: FA
authors.lastname: Stockl
authors.forename: N
authors.initials: N
authors.lastname: Tucker
authors.forename: M N
authors.initials: MN
authors.lastname: Burnier
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D001707:Biopsy, Needle; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy / Q000556:secondary*; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy / Q000556:secondary*; D011882:Radiotherapy, High-Energy; D013953:Thymus Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000532:radiotherapy; D014057:Tomography, X-Ray Computed