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Fig. 4A. 57-year-old man with Mycobacterium
avium-intracellulare complex pulmonary infection with follow-up CT scans.
Transaxial thin-section CT scans (2.5-mm collimation) show multiple cavitary
nodules in both lungs. Note feeding bronchi that are thickened and ectatic and
running into cavitary nodules (arrows).