Bilateral brown tumor of the jaw. Apropos of a case

: A 42 years old woman was seen October 1987 because of tumor on the left maxilla. Removal of the lesion and histologic examination conclude at myeloplaxe tumor. A second giant cell lesion appears in the right maxilla 2 years later. The diagnosis of brown tumor was confirmed by the discovery of a parathyroid adenoma. We discuss about this case diagnosis difficulty of brown tumor from the others giant cell lesions of the jaws.