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Mandibular ossifying fibroma in 2 cattle in Brazil.
J Vet Diagn Invest
January 2025
Veterinary Pathology Laboratory, Veterinary Hospital-Universidade Federal de Mato Grosso, Cuiabá, Brazil.
Ossifying fibroma (OF) is a slow-growing, expansive, and benign fibro-osseous neoplasm that is rare in cattle. It mainly affects the craniofacial bones, especially the mandible. Here, we report 2 cases of mandibular OF in Nelore and mixed-breed steers with enlarged masses in the rostral portion of the mandible.
View Article and Find Full Text PDFClassification of Fibro-osseous Tumors in the Craniofacial Bones using DNA Methylation and Copy Number Alterations.
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 PDFFibrous Dysplasia of the Ethmoid Bone Diagnosed in a 10-Year-Old Patient.
Medicina (Kaunas)
December 2024
Department of Otolaryngology, Head and Neck Surgery, Wroclaw Medical University, 50-556 Wrocław, Poland.
Fibrous dysplasia is an uncommon bone disorder affecting various parts of the skeleton, often affecting facial and cranial bones. In this case, a 10-year-old patient was diagnosed with fibrous dysplasia of the ethmoid sinus at an early age. The patient has experienced nasal congestion, snores, and worsening nasal patency since 2019.
View Article and Find Full Text PDFLingual osteoma: A case report.
Int J Surg Case Rep
December 2024
Department of Pathology, Faculty of Medicine, Bushehr University of Medical Sciences, University of Bushehr, Bushehr, Iran.
Introduction And Importance: Lingual osteoma is a rare benign osteogenic tongue tumor. Osteomas usually arise from craniofacial bones and are rare in the intraoral region.
Case Presentation: The tongue mass of a 20-year-old Persian woman with a history of several years of lump sensation was removed, and the histological examination confirmed the diagnosis of osteoma.
Identification of Novel and Rare GNAS Mutations in Craniofacial Fibrous Dysplasia.
J Oral Pathol Med
January 2025
Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China.
Background: Fibrous dysplasia (FD), caused by activating mutations of GNAS, is a skeletal disorder with considerable clinicopathological heterogeneity. Although prevalent mutations such as R201C and R201H dominate in FD, a limited number of rare mutations, including R201S, R201G, and Q227L, have been documented. The scarcity of information concerning these uncommon mutations motivates our investigation, seeking to enhance comprehension of this less-explored subgroup within FD.
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