Myoepithelioma of the buccal region: Report of a case with histopathological and immunohistochemical studies.

DOI 15 References
  • NAGASHIMA Hiroyuki
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine
  • ASADA Koichi
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine
  • TOCHIHARA Shihomi
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine
  • SATO Tohru
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine
  • WATANABE Nobuyuki
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine
  • ISHIBASHI Katsunori
    The second department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine

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  • 頬部に生じた筋上皮腫の１例

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Abstract

Myoepithelioma is a rare salivary gland tumor that appears mainly in the parotid gland and palate. We report a case of myoepithelioma originating from the buccal gland. A 19-year-old woman presented with a painless elastic hard mass beneath the left buccal mucosa. The mass was well defined and showed no ulcer. The mass was surgically removed under the clinical diagnosis of a benign minor salivary gland tumor. Macroscopically, the tumor was solid and nodular, surrounded by a thin fibrous capsule. Histopathologically, the tumor consisted of spindle-shaped and/or stellate cells with scanty cytoplasm. These tumor cells formed a trabecular structure and small nests in some regions; however a tubular structure was not seen. Immunohistochemistry showed positive staining for cytokeratin, S-100 protein, actin, and GFAP.<BR>The tumor was diagnosed as a myoepithelioma arising from the buccal gland.

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