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Ameloblastic fibroma (AF) is a rare, slow-growing benign neoplasm, comprised of tissues of odontogenic origin. It constitutes 2% of odontogenic tumours, occurring at any age, but has a predilection to present in the first two decades of life. AF principally affects the posterior mandible. It is characterized by epithelial islands and cords immersed in ectomesenchyme that mimics the dental papilla and enamel organ but without actual hard tissue formation. Herein, we describe the case of a 6-year-old Caucasian male who presented to the Oral and Maxillofacial Department at Alder Hey Children's Hospital, Liverpool, UK, with a painless expansile mass in the left mandible which was diagnosed as a benign ameloblastic fibroma and subsequently enucleated and reconstructed with a parietal calvarial bone graft. A brief literature review and the issues surrounding diagnosis are discussed.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6604494 | PMC |
http://dx.doi.org/10.1155/2019/5149219 | DOI Listing |
Am J Surg Pathol
October 2024
Department of Oral Pathology, Peking University School and Hospital of Stomatology.
Ameloblastic fibroma (AF) and related lesions, namely ameloblastic fibrodentinoma (AFD) and ameloblastic fibro-odontoma (AFO), span a spectrum from true neoplasms to hamartomas. The 2017 World Health Organization classification proposes that AFD and AFO are precursors to odontomas, yet their precise nature remains uncertain. This study examined 19 AF cases, 4 AFD, 15 AFO, 19 odontomas (OD, 14 complex, 5 compound), and 2 ameloblastic fibrosarcomas (AFS), focusing on clinical characteristics, recurrence, and molecular profiles.
View Article and Find Full Text PDFOral Dis
October 2024
Cell Culture Laboratory, School of Dentistry, Federal University of Pará, Belém, Brazil.
The acetylation of histones H2A on lysine 5 (H2AacK5) and H3 on lysine 27 (H3AcK27) modulate several cellular mechanisms through the p300 enzyme in pathological lesions; however, their role in odontogenic lesions has not been addressed. This study aims to evaluate the immunoexpression of p300, H2AacK5, and H3AcK27 in samples of ameloblastoma (AMB) (n = 30), odontogenic keratocyst (OK) (n = 15), adenomatoid odontogenic tumor (AOT) (n = 10), odontogenic fibroma (OF) (n = 8), calcifying odontogenic cyst (COC) (n = 8), odontogenic myxoma (MIX) (n = 10), and ameloblastic fibroma (AF) (n = 06). The percentage of p300-positive cells was higher in AOT and decreased in COC, OK, AMB, AF, OF, and MIX.
View Article and Find Full Text PDFOral Maxillofac Surg
December 2024
Department of Oral Diagnostic and Surgical Sciences, University of Otago, Dunedin, New Zealand.
Med Oral Patol Oral Cir Bucal
September 2024
Universidade Federal do Rio Grande do Sul Faculdade de Odontologia, Rua Ramiro Barcelos, 2492, sala 503 CEP: 90035-003, Santana, Porto Alegre RS, Brazil
J Craniomaxillofac Surg
October 2024
Department of Oromaxillofacial Surgery and Stomatology, Semmelweis University, 1088, Budapest, Hungary.
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