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Fig. 8. —Pyogenic airways disease in 39-year-old HIV-positive man with recurrent respiratory infections. High-resolution CT scan of lung bases shows multilobar bronchial dilation, bronchial wall thickening, and bronchiolitis (arrow). Note clustering of small nodular and branching opacities that spare pleural surfaces. Such centrilobular distribution is highly suggestive of infectious cause. Note minimal foci of peripheral consolidation in right middle lobe and lingula. (Reprinted with permission from [3])