A case of actinomycosis involving the lower lip

  • Yasuhiro UENO
    Department of Dentistry, Oral and Maxillofacial Surgery, JichiMedical University
  • JINBU Yasuhiro
    Department of Dentistry, Oral and Maxillofacial Surgery, JichiMedical University
  • SHINOZAKI Yasuhisa
    Department of Dentistry, Oral and Maxillofacial Surgery, JichiMedical University
  • KUSAMA Mikio
    Department of Dentistry, Oral and Maxillofacial Surgery, JichiMedical University

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Other Title
  • 下唇に生じた放線菌症の1例
  • カシン ニ ショウジタ ホウセンキンショウ ノ 1レイ

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Description

A 56-year-old woman presented with a mass in the lower lip, which she had first noticed several months previously. Because the lesion gradually enlarged and was accompanied by tenderness, she visited her family dentist and was referred to our hospital. An elastic, hard mass in the lower lip, approximately 10 mm in diameter, was identified. Magnetic resonance imaging revealed a lesion with high signal intensity and a central region of low signal intensity on T2-weighted imaging. The mass lesion was surgically resected for a clinical diagnosis of benign tumor. The resected lesion was pale yellow. Histopathologically, actinomycotic colonies were identified. The diagnosis was actinomycosis.

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