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Mesenchymal Chondrosarcoma of the Mandible: A Rare Malignant Tumor

Mesenchymal chondrosarcoma (MCHS) is a highly aggressive, malignant, cartilaginous tumor that represents about 1% of all chondrosarcomas. Only about 50 cases of MCHS of the jaw have been reported in the English-language literature; maxillary tumors are much more common than mandibular tumors. We present a new case of MCHS of the mandible that arose in a 22-year-old woman whose initial two biopsies did not reveal the features of the tumor. The diagnosis was made only after an incisional biopsy.