Brown tumor of mandible in association with primary hyperparathyroidism: a case report.

Brown tumors are giant cell focal lesion that arises as a result of abnormal bone metabolism in patients with hyperparathyroidism (HPT). The lesions localize in areas of extensive bone resorption, which is replaced by fibrovascular tissue and giant cells with abundant deposits hemorrhage and hemosiderin. A rare case of brown tumor of mandible in a 22-year-old woman is reported here. This case emphasizes the importance of a detailed systemic investigation for all lesions in the maxillofacial region and also discusses the diverse presentations associated with primary HPT.