Abstract
A chondrosarcoma on the mandibular condyle is described. The patient was a 58-year-old woman with left preauricular swelling. Examination disclosed a nontender, hard mass overlying the left TMJ region. The mandibular movement was limited to 26 mm of interincisal distance and the mandible deviated to the left with mouth opening. Radiographic investigation revealed a tumorous mass around the condyle showing partial resorption. The bone scintigram showed accumulation of 99mTc into the tumor mass. The lesion, which was clinically suspected to be a chondrosarcoma, was surgically excised with the mandibular ramus, the temporal muscle and the external pterygoid muscle. Histologically, the lesion was composed of translucent cartilage and many cells with enlarged and hyperchromatic nuclei. The histopathological diagnosis was chondrosarcoma.
The patient is now being followed up, with special attention to lung metastasis.
