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Undifferentiated pleomorphic sarcoma in the maxillary sinus: a case report.
J Med Case Rep
January 2025
Department of Oral and Maxillofacial Pathology, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Background: Undifferentiated pleomorphic sarcoma, previously called malignant fibrous histiocytoma, is a type of malignant mesenchymal tumor (sarcoma) of soft tissue and sometimes bone. It is uncommon in the oral cavity and very sporadic in the maxillary sinus. Microscopic diagnosis of this malignancy in the maxillary sinus can be very challenging, because there is a range of features that may overlap with other benign and malignant tumors.
View Article and Find Full Text PDFA survey of lip lesions diagnosed in a single institution: A clinicopathological study.
J Clin Exp Dent
December 2024
School of Dentistry, Department of Clinical and Preventive Dentistry, Oral Pathology Unit, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil.
Background: The aim of this study was to assess the clinicopathological features of lip lesions diagnosed in a single Oral Pathology service in Brazil.
Material And Methods: It was a cross-sectional study based on secondary data. Between 2000 and 2019, all lip lesions diagnosed in an Oral Pathology service in Brazil were analyzed.
Diagnostic and Prognostic Challenges of Oral Melanoma in Dogs: A Literature Review and 2 Case Studies.
J Vet Dent
January 2025
Specialty Oral Pathology for Animals, Geneseo, IL, USA.
Oral melanoma is the most common maxillofacial malignancy in dogs. A unique characteristic of melanoma is its ability to mimic other oral tumors, which makes it one of the most challenging oral tumors to diagnose, especially since 30% to 40% of cases are amelanotic. This article presents 2 case reports of dogs with amelanotic oral melanoma that were both diagnostically challenging.
View Article and Find Full Text PDFBenign Bone Tumors of the Hand: Beyond Enchondromas.
J Am Acad Orthop Surg
November 2024
From the Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY (Albanese, Lynch, and Damron), and the Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, VA (Eswaran).
Beyond enchondromas, the most common bone tumors of the hand, there are numerous less common benign bone tumors and mimickers with which orthopaedic and hand surgeons should be familiar. These include other benign cartilage tumors, cystic lesions, osteogenic tumors, giant cell tumor, and fibrous dysplasia. Particularly unique lesions include bizarre parosteal osteochondromatous proliferation (Nora lesion), florid reactive periostitis, turret exostosis (acquired osteochondroma), giant cell reparative granuloma (solid aneurysmal bone cyst), and epidermoid cyst.
View Article and Find Full Text PDFNAB2::STAT6 Rearranged Carcinoma of the Parotid Gland with Sebaceous Differentiation: A Case Report.
Head Neck Pathol
January 2025
Department of Pathology, University Medical Center Utrecht, Utrecht, 3508 GA, The Netherlands.
Purpose: The NAB2::STAT6 fusion is predominantly associated with solitary fibrous tumors (SFTs) and is utilized in diagnosing SFTs through nuclear STAT6 protein overexpression. Recent studies expanded the phenotypic spectrum of NAB2::STAT6 rearranged neoplasms, including adamantinoma-like and teratocarcinosarcoma-like phenotypes. We report a case of a NAB2::STAT6 rearranged epithelial tumor exhibiting sebaceous differentiation in the parotid gland.
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