下顎骨中心性に発症した線維性偽腫瘍の1例

  • 岸 裕子
    群馬大学大学院医学系研究科顎口腔科学分野
  • 根岸 明秀
    群馬大学大学院医学系研究科顎口腔科学分野
  • 信澤 愛子
    群馬大学大学院医学系研究科顎口腔科学分野
  • 山口 徹
    群馬大学大学院医学系研究科顎口腔科学分野
  • 笹岡 邦典
    群馬大学大学院医学系研究科顎口腔科学分野
  • 横尾 聡
    群馬大学大学院医学系研究科顎口腔科学分野

書誌事項

タイトル別名
  • A case of intraosseous fibrous pseudotumor of the mandible
  • カガクコツ チュウシンセイ ニ ハッショウ シタ センイセイ ギ シュヨウ ノ 1レイ

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抄録

Pseudotumor with fibrous proliferation is a rare benign nonneoplastic lesion in the oral region. We report a case of intraosseous fibrous pseudotumor of the mandible. A 50-year-old woman was referred to our university hospital to undergo further evaluation of a radiolucent lesion between the lateral incisor and canine of the right mandible. At presentation, no swelling was found in the alveolus of the anterior region of the mandible. A panoramic X-ray photograph revealed a radiolucent lesion causing root separation of the lateral incisor and canine. A computed tomography scan revealed mild bone swelling, a thinned cortex at the labial side of the mandible, and a low-density mass. Histopathological examination of a biopsy specimen suggested fibrous overgrowth. The lesion was intraorally extirpated under general anesthesia. Histopathological examination of the surgical specimen revealed high-density fibrous proliferation without dysplasia. There was virtually no lymphocyte infiltration. Histopathologically, the lesion was diagnosed to be a fibrous pseudotumor. No recurrence has occurred, and bone regeneration at the extirpated region is good 3 years after surgery.

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