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Fig. 4C. —57-year-old man with Mycobacterium avium-intracellulare complex pulmonary infection with follow-up CT scans. Transaxial thin-section CT scan shows multiple small centrilobular nodules in right lower lobe superior segment. Note feeding bronchus that is mildly thickened and ectatic and running into one of the centrilobular nodules (arrowheads).