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Unusual epithelial-myoepithelial carcinoma in palate: case report and immunohistochemical study

  • Autores: Pollianna-Muniz Alves, Luiz Augusto Costa da Silva, Gustavo-Pina Godoy, Daliana Queiroga de Castro Gomes, Lélia Maria Guedes Queiroz, Hébel Galvão Cavalcanti
  • Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 2, Nº. 1 (Febrero), 2010, págs. 22-25
  • Idioma: inglés
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  • Resumen
    • Ephitelial-myoepithelial carcinoma (EMC) is a neoplasm of salivary gland extremely rare and low-grade malig- nant, exhibiting predilection for major salivary gland, especially parotid gland. This paper described a case of EMC localized in soft palate. The initial clinical diagnosis were mucoepidermoid and adenoid cystic carcinoma.

      A incisional biopsy was performed, and the histological diagnosis was adenocarcinoma not otherwise specified.

      The patient underwent excisional biopsy, where was realized immunohistochemical analysis, staining the duct-like structures, where the inner layer of epithelial cells positively for CK 14, whereas outer layer of myoepithelial cells stained positively for smooth muscle actin (SMA) and vimentin antibodies. Based on these findings, the final histological diagnosis was EMC. The patient was submitted 30 sessions of radiotherapy, and she is being follow-up about 2 years without evidence recurrences.


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