口底に発生した良性線維性組織球腫の1例

  • 林 常敏
    掛川市立総合病院歯科口腔外科
  • 猟山 大
    掛川市立総合病院歯科口腔外科
  • 藤内 祝
    名古屋大学大学院医学系研究科頭頸部感覚器外科学講座顎顔面外科学
  • 上田 実
    名古屋大学大学院医学系研究科頭頸部感覚器外科学講座顎顔面外科学

書誌事項

タイトル別名
  • A case of benign fibrous histiocytoma of the floor of the mouth
  • ショウレイ ホウコク コウテイ ニ ハッセイ シタ リョウセイ センイセイ ソシキキュウ シュ ノ 1レイ

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抄録

Benign fibrous histiocytoma occurs predominantly on sun-exposed skin, and rarely arises in the oral cavity. A case of benign fibrous histiocytoma arising in the floor of the mouth is reported. A 67-year-old man was referred to our hospital because of a painless small mass on the right side of the floor of the mouth. Clinical examination revealed a papillary tumor 8 × 8 mm in diameter on the floor of the mouth. The clinical diagnosis was fibroma, and an excisional biopsy was performed. Microscopically, the surgical specimen consisted of uniform spindle-shaped cells arranged in a storiform pattern. There was no evidence of cellular atypia or mitotic figures. Immunohistochemically, the tumor cells were negative for actin (HHF-35) and CD34. The Ki-67 index was less than 10 %. On the basis of these findings, the tumor was diagnosed to be a benign fibrous histiocytoma. No recurrence has been noted as of 1 year after surgery.

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