A case of myofibroma arising in the mandibular gingiva

  • ARAI Hiroyuki
    Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
  • OMURA Ken
    Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
  • HARADA Hiroyuki
    Oral and Maxillofacial Surgery, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
  • OKADA Norihiko
    Diagnostic Oral Pathology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University

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Other Title
  • 下顎歯肉部に発生した筋線維腫の1例
  • ショウレイ ホウコク カガク シニクブ ニ ハッセイ シタ キン センイ シュ ノ 1レイ

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Abstract

Myofibroma is a solitary myofibroblastic proliferative neoplasm occurring predominantly in infants and children. Myofibroma rarely arises in the oral and maxillofacial region. We report a case of myofibroma of the mandibular gingiva in a 15-year-old girl. She noticed a gradual swelling in the right mandibular molar region 1 month previously and was referred to our hospital. A soft elastic mass arising in the right molar gingiva, measuring 1.2×1.0-cm, was recognized. An incisional biopsy of the mass yielded a diagnosis of myofibroma. Because the tumor grew rapidly after the biopsy, excision of the tumor with alveolectomy of the mandibular molar region was performed. She has no evidence of recurrence 3 years 9 months after surgery.

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