Two Cases of Atypical Actinomycosis Forming Localized Nodule in Oral Cavity

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  • SUGIYAMA Naoki
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University
  • TERADA Chika
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University
  • TATEHARA Seiko
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University
  • YAMACHIKA Shigeo
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University
  • SATO Toru
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University
  • SATOMURA Kazuhito
    Department of Oral Medicine and Stomatology, School of Dental Medicine, Tsurumi University

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Other Title
  • 口腔内に限局性腫瘤を形成した非定型放線菌症の2例
  • 症例報告 口腔内に限局性腫瘤を形成した非定型放線菌症の2例
  • ショウレイ ホウコク コウコウ ナイ ニ ゲンキョクセイ シュリュウ オ ケイセイ シタ ヒテイケイ ホウセンキンショウ ノ 2レイ

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Abstract

Actinomycosis is caused by Actinomyces israelli, an oral flora （oral indigenous bacteria）. Actinomycosis leads to nonspecific inflammation caused by suppurative bacteria and becomes chronic. Its typical symptoms include multiple abscesses, board-like induration, and severe trismus, which can become chronic. Moreover, pus, including drusen, discharges from an abscess. Here, we report two cases of atypical actinomycosis with a mass localized at the oral mucosa but without the typical clinical signs of actinomycosis. The first case was an 80-year-old male having an elastic hard mass on his lip. Excisional biopsy revealed sialadenitis with sulfur granules. The second case was a 59-year-old male having an elastic hard mass under the buccal mucosa. Puncture of the lesion revealed sulfur granules in pus. Thus, Actinomycosis with a localized nodule should be considered in the differential diagnosis of a neoplasm lesion and be accurately diagnosed before treatment.

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