A case of myoepithelioma in the hard palate

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  • Sato Ryosuke
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University Socialized Medicine Corporation Hokuto, Hokuto Hospital
  • Kumai Takumi
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University
  • Kishibe Kan
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University
  • Takahara Miki
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University
  • Katada Akihiro
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University
  • Hayashi Tatsuya
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University
  • Harabuchi Yasuaki
    Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University

Bibliographic Information

Other Title
  • 硬口蓋に発生した筋上皮腫の1例
  • コウコウガイ ニ ハッセイ シタ キン ジョウヒ シュ ノ 1レイ

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Description

We report a case of myoepithelioma in the hard palate. The patient was a 69-year-old woman with a mass in the hard palate. The hard elastic mass was covered with normal mucosa and located on the right side of the hard palate. We diagnosed myoepithelioma by biopsy and surgically removed the tumor. An epithelioid organization was the main histopathology finding, and multiple histology was mixed. Actin, αSMA, and S-100 protein, which is a marker of the myoepithelium system, and GFAP were positive by immunostaining. The MIB-1 index, which is an index of malignancy, was 5％, suggesting the mass was benign. A diagnosis of myoepithelioma（mixed type）was made. Postoperative observation revealed no recurrence as of 10 months after the operation, but there are reports of recurrence and malignant transformation, so careful follow-up is necessary.

Journal

  • Stomato-pharyngology

    Stomato-pharyngology 33 (1), 45-50, 2020

    Japan Society of Stomato-pharyngology

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