Fig 2. CT images of a Mycobacterium avium pulmonary infection in a 44-year-old man.

Axial CT images with lung and mediastinal window settings (2.5-mm slice) were obtained at the level of the segmental bronchi of the right lower lobe. The CT images show relatively thin and relatively even thickening of the cavity, and tiny ill-defined satellite nodules (<4 mm) with air trapping in the right lower lobe. Note pleural thickening next to the cavity (B) (arrowheads).