A case of giant cell epulis accompanied by bone formation in the premolar region of the mandible

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  • TAKAMARU Natsumi
    Department of Oral Surgery, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School
  • UCHIDA Daisuke
    Department of Oral Surgery, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School
  • OHE Go
    Department of Oral Surgery, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School
  • NAGAI Hirokazu
    Department of Oral Surgery, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School
  • ISHIMARU Naozumi
    Department of Oral Molecular Pathology, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School
  • MIYAMOTO Youji
    Department of Oral Surgery, Subdivision of Molecular Oral Medicine, Division of Integrated Sciences of Translational Research, Institute of Health Biosciences, The University of Tokushima Graduate School

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Other Title
  • 下顎小臼歯部に発生した骨形成を伴う巨細胞エプーリスの1例
  • カガク ショウキュウシブ ニ ハッセイ シタ ホネ ケイセイ オ トモナウ キョサイボウ エプーリス ノ 1レイ

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Abstract

Giant cell epulis (peripheral giant cell granuloma) is a granuloma consisting of a large number of multinucleated giant cells. Its incidence is high in Europe and the United States, but is very low in Japan. Giant cell epulis accompanied by bone formation is extremely rare in Japan. We report a case of giant cell epulis accompanied by bone formation. A 46-year-old woman visited our hospital because of a mass in the left mandibular molar region. There was a well-demarcated, pedunculated mass in the left mandibular molar region. The mass was excised under the clinical diagnosis of epulis. Histopathologically, the resected specimen consisted of spindle cells resembling fibroblasts and many multinucleated giant cells. Moreover, newly synthesized bone was observed in the center of the mass. The pathological diagnosis was a giant cell granuloma. Two years six months after the operation, there has been no evidence of recurrence.

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