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Fig. 3A 37-year-old man with chronic cough. Cultures of
bronchoalveolar lavage fluid showed Mycobacterium chelonei organisms.
Axial CT image (1.25-mm section, lung window setting) shows large cavity in
right upper lobe with lobular intracavitary mass. Note ground-glass opacity in
left upper lobe, possibly representing additional focus of infection.
Histopathologic analysis of resected specimen showed necrotic lung in
cavity.