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A case of actinomycosis masquerading as a parotid malignant tumor Toshihiko Yamashita 1 , Yasuyuki Kajimoto 1 , Hitomi Shinomiya 2 , Naoki Otsuki 1 , Ken-ichi Nibu 1 1Department of Otolaryngology-Head and Neck Surgery, Kobe University pp.469-473
Published Date 2020/5/20
DOI https://doi.org/10.11477/mf.1411202423
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 Although cervico-facial actinomycosis is well known, primary actinomycosis of the parotid gland is rare. We report a case of parotid actinomycosis mimicking a malignant tumor clinically. An 82-year-old female presented with a two month history of an enlarging parotid mass with infiltration to the skin. She had taken tacrolimus for rheumatoid arthritis. Fine needle aspiration cytology showed non-specific findings. Open biopsy revealed sulfur granules, which were bacterial colonies on histopathological examination. She was diagnosed with actinomycosis, was treated with Doxycycline for six months, and experienced a complete response. She had no recurrence for one year.


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電子版ISSN 1882-1316 印刷版ISSN 0914-3491 医学書院

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