Abstract
A 24-year-old woman was referred to the School of Dentistry/Brazil, in 2008, complaining about a swelling on the right posterior maxilla, with symptoms of nasal obstruction and infra orbital pain. The intraoral examination revealed a vestibular expansion mass, measuring 2.0 × 1.5 cm. Computed tomography (CT) showed a large, well-demarcated, unilocular and hypodense mass in the posterior right side of maxilla. The patient had a history of previous surgery, in the same site, about 3 years ago, with histopathological diagnosis compatible with JOF. An excisional biopsy was performed, confirming this diagnosis. Microscopically, the neoplasm consisted of a cellular fibrous connective tissue, with several spindle or oval-shaped fibroblasts, presenting large nuclei and cytoplasms with imprecise limits. Mitotic figures, clusters of giant multinucleated cells, and a mineralized component showing spherical concentric lamellated ossicles and trabeculae of cellular woven bone were also observed. Currently, after 6 years, there was still no evidence of recurrence.
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