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Baumhoer D, Haefliger S, Ameline B, Hartmann W, Amary F, Cleven A, Klein MJ, Thompson LDR, Harder D, O’Donnell P. Ossifying Fibroma of Non-odontogenic Origin: A Fibro-osseous Lesion in the Craniofacial Skeleton to be (Re-)considered. Head Neck Pathol 2021; 16:257-267. [PMID: 34173971 PMCID: PMC9018933 DOI: 10.1007/s12105-021-01351-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 06/22/2021] [Indexed: 11/30/2022]
Abstract
In the cranio-facial skeleton, a heterogeneous group of well characterized fibro-osseous lesions can be distinguished. Whereas fibrous dysplasia can affect any skeletal bone, ossifying fibroma and cemento-osseous dysplasia exclusively develop in the cranio-facial region, with most subtypes restricted to the tooth bearing areas of the jaws. Herein we present a series of 20 fibro-osseous lesions that developed mostly in the frontal bone and in the mandible, presenting as expansile intramedullary tumors with a unique histologic appearance and an indolent clinical course. We provide evidence that these tumors are distinct from the categories included in the WHO classification and are therefore currently unclassifiable. The definition of cemento-ossifying fibroma as an odontogenic neoplasm developing only in close proximity to teeth should be re-considered and incorporate also extragnathic lesions as shown here.
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Affiliation(s)
- Daniel Baumhoer
- Bone Tumor Reference Centre, Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Schoenbeinstrasse 40, 4031 Basel, Switzerland
| | - Simon Haefliger
- Bone Tumor Reference Centre, Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Schoenbeinstrasse 40, 4031 Basel, Switzerland
| | - Baptiste Ameline
- Bone Tumor Reference Centre, Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Schoenbeinstrasse 40, 4031 Basel, Switzerland
| | - Wolfgang Hartmann
- Division of Translational Pathology, Gerhard-Domagk-Institut of Pathology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Fernanda Amary
- Cellular and Molecular Pathology, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Greater London, HA7 4LP UK ,Cancer Institute, University College London, Huntley Street, London, WC1E 6BT UK
| | - Arjen Cleven
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Michael J. Klein
- Hospital for Special Surgery, 535 E 86th St, New York, NY 10021 USA
| | | | - Dorothee Harder
- Department of Radiology, University Hospital Basel, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
| | - Paul O’Donnell
- Department of Radiology, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Greater London, HA7 4LP UK ,Cancer Institute, University College London, Huntley Street, London, WC1E 6BT UK
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