title: Chondrosarcoma of the temporomandibular joint: a case report and review of the literature.
abstract: OBJECTIVE
  Chondrosarcoma is the second most common sarcoma arising in the bone, but it rarely involves the temporomandibular joint (TMJ). To date, 30 cases of TMJ chondrosarcoma have been reported in the English literature, and the authors report an additional case arising from a cystic lesion in a 60-year-old female patient.
  
  
  METHODS
  The clinical and radiological diagnosis of the lesion was initially synovial cyst, and periodic check-ups were done after aspiration of the lesion. After three years, the patient perceived swelling of the lesion, and surgical excision was performed. The final diagnosis was grade I chondrosarcoma.
  
  
  CONCLUSIONS
  When clinicians detect a cystic lesion in the radiographic imaging of the TMJ, chondrosarcoma should be included in the differential diagnosis. In addition, computed tomography (CT) as well as magnetic resonance imaging (MRI) is recommended for the accurate diagnosis and proper preoperative planning in TMJ chondrosarcoma.
authors.affiliation: a Department of Oral Pathology, School of Dentistry and Dental Research Institute , Seoul National University , Seoul , Republic of Korea.
authors.forename: Kyu-Young
authors.initials: KY
authors.lastname: Oh
authors.affiliation: a Department of Oral Pathology, School of Dentistry and Dental Research Institute , Seoul National University , Seoul , Republic of Korea.
authors.forename: Hye-Jung
authors.initials: HJ
authors.lastname: Yoon
authors.affiliation: a Department of Oral Pathology, School of Dentistry and Dental Research Institute , Seoul National University , Seoul , Republic of Korea.
authors.forename: Jae-Il
authors.initials: JI
authors.lastname: Lee
authors.affiliation: a Department of Oral Pathology, School of Dentistry and Dental Research Institute , Seoul National University , Seoul , Republic of Korea.
authors.forename: Sam-Pyo
authors.initials: SP
authors.lastname: Hong
authors.affiliation: a Department of Oral Pathology, School of Dentistry and Dental Research Institute , Seoul National University , Seoul , Republic of Korea.
authors.forename: Seong-Doo
authors.initials: SD
authors.lastname: Hong
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002813:Chondrosarcoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D011862:Radiography, Panoramic; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging / Q000473:pathology; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed
keywords: Chondrosarcoma; Immunohistochemistry; Secondary chondrosarcoma; Temporomandibular; joint (TMJ)