Osteosarcoma: A case report and evaluation.

Osteosarcoma (OS) comprises 2.1% of all malignant oral and maxillofacial tumors. OS arising from the jaw OS differs from OS of the long bones in its biological behavior, presenting a lower incidence of metastasis and a better prognosis. The morphologic and behavioral heterogeneity observed in OS and the perplexity of the varied histological features mimicking other primary and metastatic bone tumors has emphasized the need of advanced molecular techniques in its diagnosis. Hereby, we present a case of OS which was diagnosed by immunohistochemical analysis, aiding in establishing its histogenetic origin.