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Int J Mycobacteriol. 2019 Oct-Dec;8(4):397-399. doi: 10.4103/ijmy.ijmy_134_19.

Secondary organizing pneumonia due to Mycobacterium abscessus lung disease: Case report and review of the literature.

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Department of Pulmonology, Yokohama City University School of Medicine, Yokohama, Japan.
Department of Pathology, Yokohama City University School of Medicine, Yokohama, Japan.


A 59-year-old male, who had Mycobacterium abscessus lung disease and chronic obstructive pulmonary disease, visited our hospital because of dyspnea. Chest computed tomography showed ground-glass opacity and consolidation mainly in the left upper lobe. Antibiotics treatment with levofloxacin and tazobactam/piperacillin was not effective. He underwent bronchoscopy and based on pathological findings, organizing pneumonia (OP) was diagnosed. No other underlying factors causing OP, such as collagen vascular diseases, drug, or inhalation were detected. He had the diagnosis of secondary OP due to M. abscessus lung disease. Oral predonizolone with 30 mg was initiated, and the opacity improved rapidly. Secondary OP due to M. abscessus lung diseases should be considered during M. abscessus lung diseases when antibiotics and/or antimycobacterial drugs are not effective.


Mycobacterium abscessus; nontuberculous mycobacteria; organizing pneumonia

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