Ossifying fibroma (OF) is a fibro-osseous tumor that usually occurs in young people and arises in the craniofacial bones. We report a case of a 15-year-old boy who developed progressive proptosis and hypertelorism and was found to have a mid-face and skull base tumor, initially diagnosed as psammomatoid meningioma. The tumor recurred and the resected specimen revealed a unique OF having trabecular and psammomatoid features. The clinical, radiographic, histopathologic findings and differential diagnoses of the case are presented.
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http://dx.doi.org/10.1007/s12105-010-0212-4 | DOI Listing |
Mod Pathol
January 2025
Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, the Netherlands; Department of Pathology, Amsterdam University Medical Center, Amsterdam, the Netherlands. Electronic address:
Fibro-osseous tumors of the craniofacial bones are a heterogeneous group of lesions comprising cemento-osseous dysplasia (COD), cemento-ossifying fibroma (COF), juvenile trabecular ossifying fibroma (JTOF), psammomatoid ossifying fibroma (PsOF), fibrous dysplasia (FD), and low-grade osteosarcoma (LGOS) with overlapping clinicopathological features. However, their clinical behavior and treatment differ significantly, underlining the need for accurate diagnosis. Molecular diagnostic markers exist for subsets of these tumors, including GNAS mutations in FD, SATB2 fusions in PsOF, mutations involving the RAS-MAPK signaling pathway in COD, and MDM2 amplification in LGOS.
View Article and Find Full Text PDFOral Dis
December 2024
Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
Objective: To assess the sclerostin, β-catenin, and tryptase expression in fibro-osseous lesions (FOL) of the jaws.
Subjects And Methods: Immunohistochemistry analysis was performed for these proteins on FOL and non-lesional bone. The sclerostin-positive cells were scored from 0 (no expression) to 3 (high expression).
J Stomatol Oral Maxillofac Surg
December 2024
Nantes Université, CHU Nantes, Service de Chirurgie Maxillo-Faciale et Stomatologie, F-44000, Nantes, France; Nantes Université, Univ Angers, CHU Nantes, INSERM, CNRS, CRCI2NA, F-44000, Nantes, France. Electronic address:
Ossifying fibroma (OF) is a rare benign fibro-osseous neoplasm developing mostly in maxillo-facial bones. OF is divided in cemento-ossifying fibroma (COF), juvenile trabecular ossifying fibroma (JTOF) and psammomatoid ossifying fibroma (PSOF). The aim of this systematic review was to synthetize the existing literature on OF, investigating the clinical and radiological parameters related to the different forms of the disease, and to compare the treatment modalities according to their associated recurrence rate.
View Article and Find Full Text PDFJ Clin Med
May 2024
Maxillofacial Surgery Unit, Department of Mental Health and Sense Organs, Santa Maria Le Scotte, University Hospital of Siena, Viale Mario Bracci, 16, 53100 Siena, Italy.
J Oral Maxillofac Pathol
December 2023
Department of Oral Pathology and Microbiology, Meenakshi Ammal Dental College, Meenakshi Academy of Higher Education and Research, Chennai, Tamil Nadu, India.
Juvenile Ossifying Fibroma (JOF) is a type of ossifying fibroma which occurs in younger individuals and manifests as trabecular and psammomatoid variants. The nature and behaviour of these variants vary, and they exhibit characteristic histopathological appearance. The solitary presentation of these subtypes is reported in numbers, but co-occurrence of both these entities is very few.
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