期刊
INTERNAL MEDICINE
卷 45, 期 1, 页码 15-20出版社
JAPAN SOC INTERNAL MEDICINE
DOI: 10.2169/internalmedicine.45.1217
关键词
Mycobacterium avium-intracellulare complex; organizing pneumonia; immune reaction; corticosteroids
A 67-year-old woman presented high-grade fever and dyspnea. Sputum culture confirmed Mycobacterium avium-intracellulare complex ( MAC). Transbronchial lung biopsies revealed organizing pneumonia (OP) that was rapidly improved with corticosteroid. Five months after onset, a nodule emerged in the right lung. Although MAC was confirmed, the lesion was deemed too small to merit anti-mycobacterial chemotherapy. Four months later, diffuse infiltrates developed on chest X-ray. Bronchoalveolar lavage study identified MAC and exhibited OP patterns. We commenced anti-mycobacterial chemotherapy. The infiltrates almost completely improved within a month without corticosteroid.
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