title: Mesenchymal chondrosarcoma of the orbit: a unique radiologic-pathologic correlation.
abstract: OBJECTIVE
  To report a unique radiologic-histopathologic correlation of mesenchymal chondrosarcoma of the orbit in a 24-year-old Asian woman.
  
  
  METHODS
  Clinicopathologic case review.
  
  
  RESULTS
  The patient was examined for left-sided proptosis of several months' duration. CT showed a left orbital mass depicting a central radiolucent, nonenhancing component, and a denser peripheral enhancing portion. Histopathologic examination of the orbital mass showed a biphasic pattern of a mesenchymal chondrosarcoma exhibiting features of a high-grade sarcoma with hemangiopericytoma pattern that corresponds to the radiopaque portion of the mass and areas of chondrosarcoma that correlated with the radiolucent component of the tumor. The patient underwent exenteration of the left orbit followed by radiotherapy and chemotherapy. The last follow-up (8 years, 1 month) disclosed no evidence of recurrence or metastatic disease.
  
  
  CONCLUSIONS
  In this case, a unique CT-histopathologic correlation of the mass was established. The authors believe that recognizing the different radiologic features of the orbital tumor can help clinicians in establishing the correct preoperative diagnosis of this potentially lethal neoplasm. To the best of the authors' knowledge, this diagnostic correlation has not been previously reported.
authors.affiliation: Department of Ophthalmology, Cullen Eye Institute, Baylor College of Medicine, Houston, Texas 77030, USA. rfont@bcm.edu
authors.forename: Ramon L
authors.initials: RL
authors.lastname: Font
authors.forename: Robin
authors.initials: R
authors.lastname: Ray
authors.forename: Mark L
authors.initials: ML
authors.lastname: Mazow
authors.forename: Maria
authors.initials: M
authors.lastname: Del Valle
mesh_terms: D044466:Asian People; D017024:Chemotherapy, Adjuvant; D018211:Chondrosarcoma, Mesenchymal / Q000150:complications / Q000000981:diagnostic imaging* / Q000208:ethnology / Q000473:pathology* / Q000601:surgery; D005094:Exophthalmos / Q000000981:diagnostic imaging / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D017233:Orbit Evisceration; D009918:Orbital Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000208:ethnology / Q000473:pathology* / Q000601:surgery; D018714:Radiotherapy, Adjuvant; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult