Pulmonary infection of Mycobacterium avium-intracellulare complex with simultaneous organizing pneumonia.
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 antimycobacterial chemotherapy. The infiltrates almost completely improved within a month without corticosteroid.
Division of Internal Medicine, Chitose City Hospital, Chitose.
Kunio
K
Hamada
Sonoko
S
Nagai
Yoshikazu
Y
Hara
Toyohiro
T
Hirai
Michiaki
M
Mishima
D000368:Aged; D018549:Cryptogenic Organizing Pneumonia / Q000150:complications*; D005260:Female; D006801:Humans; D015270:Mycobacterium avium-intracellulare Infection / Q000150:complications* / Q000188:drug therapy; D014397:Tuberculosis, Pulmonary / Q000150:complications* / Q000188:drug therapy