Juvenile ossifying fibroma. An analysis of 33 cases with emphasis on histopathological aspects

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