JUVENILE OSSIFYING FIBROMA - AN ANALYSIS OF 33 CASES WITH EMPHASIS ONHISTOPATHOLOGICAL ASPECTS

Juvenile ossifying fibroma (JOF) is a maxillofacial fibro-osseous lesi on that may show cell-rich osteoid strands or psammoma-like ossicles. Whether both types are variants of a single entity or different lesion s under the same diagnostic label is a subject of debate. This problem was investigated by analyzing a series of 33 patients with lesions ha ving one or bath of the above histological appearances. It was conclud ed that osteoid strands define a unique fibro-osseous lesion but that lesions with psammoma-like ossicles fall within the morphological spec trum of cemento-ossifying fibroma. Therefore the term juvenile ossifyi ng fibroma should be reserved for the lesion with the osteoid strands.