Rapidly maturing juvenile ossifying fibroma: a case report.

This report describes an unusual case of juvenile ossifying fibroma (JOF) in a 16-year-old female patient with a clinical presentation of a single large, well-circumscribed swelling on left side of the palate. Ossifying fibromas are normally slow growing benign lesions. Radiographically they can present as radiolucent, mixed or radiopaque lesions depending on the degree of maturity. A period of at least 6 years is required for the lesion to pass from the radiolucent to radiopaque stage. All previously reported cases of JOF have been either radiolucent or mixed density lesions, but our case is unusual because the lesion had shown apparently rapid transformation into an almost complete radiopaque stage at a very early age.