A case of myoepithelioma in the palate
Autor: | Munehisa Okada, Kaoru Kusama, Hisao Shigematsu, Seiji Suzuki, Hiroko Shida, Hideaki Sakashita |
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Rok vydání: | 2004 |
Předmět: |
chemistry.chemical_classification
Partial Maxillectomy Pathology medicine.medical_specialty Myoepithelioma medicine.diagnostic_test Glial fibrillary acidic protein biology business.industry Vimentin Anatomy medicine.disease Lesion Pleomorphic adenoma chemistry Keratin Biopsy medicine biology.protein medicine.symptom business |
Zdroj: | Japanese Journal of Oral & Maxillofacial Surgery. 50:87-90 |
ISSN: | 2186-1579 0021-5163 |
DOI: | 10.5794/jjoms.50.87 |
Popis: | A 50-year-old man was referred to our hospital because of a growth in the right side of the hard plate. Radiographic and computed tomographic examinations showed a unilocular radiolucent lesion with a well-circumscribed margin, involving a palatal root of the first molar. Magnetic resonance imaging (T2-weighted) showed increased signal intensity of the tumor. A possible diagnosis of pleomorphic adenoma was made on biopsy, and partial maxillectomy was performed. There has been no evidence of recurrence as of 1 year 8 months after the operation.Histopathologically, the tumor was well encapsulated by fibrous tissue and consisted of elliptical or rounded cells, with homogenous eosinophlic cytoplasm and eccentrically placed nuclei. The pathological diagnosis was myoepithelioma. Immunohistochemically, S-100 protein, vimentin, glial fibrillary acidic protein (GFAP), actin, and wide keratin were positive. Immunoreactivity for 35β H11 or 34β E12 was not detected clearly or markedly. Cells positive for PCNA, MIB-1, or both were rare. |
Databáze: | OpenAIRE |
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