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Official Journal of the Italian Society of Maxillofacial Surgery
Frequency: 3 issues
Online ISSN 1827-1901
Bertolai R. 1, Piccinini M. 2, Arnetoli F. 2
1 Azienda Ospedaliera-Universitaria Careggi S.O.D. di Chirurgia Maxillo-Facciale Università degli Studi di Firenze Insegnamento di Clinica Odontostomatologica C.L.O.P.D.
2 Scuola di specializzazione in Chirurgia Odontostomatologica Università degli Studi di Firenze, Firenze
Fibro-osseous lesions of the jaws are a heterogeneous group of disturbances in which normal bone structure is replaced by fibrous and/or immature bone tissue. In the past, opinions diverged on the criteria for diagnosis and orientation of treatment for fibrous dysplasia and ossifying fibroma, the most frequent types of these disorders. While fibrous dysplasia is often a self-limiting disorder with indistinct radiographic margins and chiefly affects adolescents, ossifying fibroma is a neoplasm with well-demarcated margins, is easily enucleated, and prevalently affects young adults. The histological features of both are similar; diagnosis is based on the criteria mentioned above. We report the case of an fibro-osseous lesion of the jaw treated at the Department of Maxillofacial Surgery of the University of Florence. A 13-year-old male patient presented with an asymptomatic slow-growing swelling in the left angle of mandible. Radiography demonstrated a radiotranslucent unilocular lesion with scattered radiopacities, which was confirmed at computed tomography. A clinical diagnosis of ossifying fibroma was established. At surgery, the lesion displayed poorly demarcated margins, with fibrous tissue that was difficult to enucleate. Histology suggested a diagnosis of fibrous dysplasia. This case demonstrates that fibro-osseous lesions may actually be different manifestations of the same disturbance at different stages of progression.