A case of actinomycosis arising in the cheek

  • MATSUURA Takashi
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry
  • UEMATSU Takashi
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry
  • DOTO Ryosuke
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry
  • NAKAYAMA Yoko
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry
  • MORI Ryota
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry
  • FURUSAWA Kiyofumi
    Department of Oral and Maxillofacial Surgery, Matsumoto Dental University School of Dentistry

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Other Title
  • 頬部に発症した放線菌症の1例
  • ショウレイ ホウコク ホオブ ニ ハッショウ シタ ホウセンキンショウ ノ 1レイ

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Abstract

We report a case of actinomycosis affecting the buccal mucosa in a patient with systemic lupus erythematosus. A 66-year-old woman with systemic lupus erythematosus presented with a swelling of the lower lip and left cheek. We suspected a salivary gland adenocarcinoma on inspection, palpation, and evaluation of the serum CA19-9 level. Enhanced computed tomography showed the location of the tumor. Other imaging techniques, including magnetic resonance imaging and ultrasonic tomography, were employed to support the clinical diagnosis. We performed a biopsy and histopathologically diagnosed the lesion as actinomycosis. The patient underwent abscess incision several times and received intravenous injections of 3g ABPC daily for 7 days, followed by 400mg of oral ABPC for 4 weeks. There was no sign of recurrence after treatment. Imaging methods were considered useful for the clinical diagnosis of actinomycosis.

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