A Case of chondrosarcoma of the mandible

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Chondrosarcoma accounts for about 10% to 20% of malignant primary bone tumors, which is the most frequent type after osteosarcoma. It has high incidence in the pelvis, long bone (hemur, etc.), and ribs, but is rarely encountered in the head and neck lesion, particularly the mandible. Radiosensitivity is ineffective, and there is no effective chemotherapy, therefore a complete resection of the tumor is necessary for curative treatment. Since the rate of local recurrence is high, it is necessary to secure a sufficient safety margin, but we have to take into account postoperative morphological, functional preservation, such as facial appearance, eating and swallowing in the head and neck lesion. Here we report on a rare case of mandible chondrosarcoma. The patient was a 39-year-old man. Chief complaint was swelling of the left oropharyngeal lateral wall that developed a year ago, and had increased in the recent 1-2 weeks. Through imaging findings, the tumor was suspected to be derived from the left mandibular ramus. We underwent fine-needle aspiration cytology, which did not lead to the diagnosis. Transoral biopsy of the left retromortar submucosal tumor diagnosed chondrosarcoma in the intraoperative frozen section diagnosis. We could perform compatible treatment through curative wide resection of the mandible and hard reconstruction in a term. There is no local recurrence and no distant metastasis 1 year after surgery; functional preservation was obtained using both local control and postoperative.

A Case of chondrosarcoma of the mandible

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