Fig. 2.

A 45-yr-old woman with M. abscessus pulmonary disease. (A) Transaxial thin-section (2.5-mm thickness) CT scan obtained at level of proximal lower lobar bronchus shows bronchiectasis (arrows) and multiple small nodules and branching centrilobular nodules, so-called tree-in-bud pattern (arrowheads) in right lung. (B) CT (2.5-mm thickness) scan obtained at level of basal trunk shows bronchiectasis (arrows) and multiple small nodules and branching centrilobular nodules, so-called tree-in-bud pattern (arrowheads) in both lungs.