DOI: 10.36347/sjmcr.2016.v04i05.016

Pages: 330-334

Osteosarcoma (OS) is a malignant mesenchymal tumor and the most common primary malignant bone tumor. About 6-7% of all OSs occur in the maxillofacial region. OS may arise de novo or subsequent to other conditions. Our report is about a 24-year-old women with the chief complaint of oral mass in the anterior side of the mandible. Histopathological examination showed neoplastic tissue which was suggestive of chondroblastic osteosarcoma. The patient underwent partial mandibulectomy and chemotherapy followed by reconstruction with femoral free flap and prosthodontic rehabilitation. Fortunately after 5 years follow up there is no recurrence. The aim of this report is to show importance of careful diagnosis and treatment planning and to raise awareness of the possibility that Fibro osseous lesions can transform into osteosarcoma.