Extrafollicular adenomatoid odontogenic tumor: a case report |
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Authors: | Kaminagakura Estela Costa Marilia Sousa Lopes Maria Candida Almeida de Almeida Oslei Paes |
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Institution: | Department of Stomatology and Oral Pathology, UNILAVRAS-Lavras, Minas Gerais, Brazil. |
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Abstract: | The adenomatoid odontogenic tumor (AOT) is a benign, non-invasive lesion with a slow but progressive growth. This tumor has three variants: follicular, extrafollicular, and peripheral. The extrafollicular type is an intraosseous lesion that is not associated with unerupted teeth. Radiographically, it appears as a well-defined, unilocular, round or ovoid radiolucency with multiple, small, irregular radiopaque foci. Microscopically, it is characterized by nodules of cuboidal or columnar epithelial cells that form nests, rosette or duct-like structures (with minimal stromal connective tissue), and acellular calcifications. This article presents the case of a 35-year-old man with a lesion on the anterior mandible. Clinical and radiographic features indicate that this lesion is an extrafollicular variant of AOT. |
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