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<p>Bronchiectasis due to previous tuberculosis is known to precede <i>Mycobacterium avium</i> (MAC) lung disease. Coronavirus disease 2019 (COVID-19) is an emerging infectious disease, and residual bronchiectasis following COVID-19 is common as well as tuberculosis. However, there have been no reports documenting MAC lung disease secondary to bronchiectasis post-COVID-19 until now. We present the case of an 84-year-old patient on steroid therapy for alveolar hemorrhage who developed COVID-19, resulting in residual bronchiectasis. Despite no evidence of chronic airway infection immediately prior to the COVID-19 infection, the patient developed pulmonary MAC disease 2&#xa0;years later. This is the first report of MAC lung disease secondary to bronchiectasis following COVID-19. Similar cases are likely to occur in the future, necessitating caution.</p>

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Mycobacterium avium (MAC) lung disease in post-COVID-19 bronchiectasis: a need for caution as a potential risk factor for MAC infection

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月24日

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  • Issei Oi,
  • Kohei Fujita,
  • Naoki Fujimoto,
  • Saiki Yoshimura,
  • Takanori Ito,
  • Takuma Imakita,
  • Osamu Kanai,
  • Kiminobu Tanizawa

摘要

Bronchiectasis due to previous tuberculosis is known to precede Mycobacterium avium (MAC) lung disease. Coronavirus disease 2019 (COVID-19) is an emerging infectious disease, and residual bronchiectasis following COVID-19 is common as well as tuberculosis. However, there have been no reports documenting MAC lung disease secondary to bronchiectasis post-COVID-19 until now. We present the case of an 84-year-old patient on steroid therapy for alveolar hemorrhage who developed COVID-19, resulting in residual bronchiectasis. Despite no evidence of chronic airway infection immediately prior to the COVID-19 infection, the patient developed pulmonary MAC disease 2 years later. This is the first report of MAC lung disease secondary to bronchiectasis following COVID-19. Similar cases are likely to occur in the future, necessitating caution.