a) Plain radiograph shows micronodular lesions throughout both lungs, which are more prominent in the upper and middle zones. b) High-resolution CT scans of the chest at the level of the right upper lobar bronchus. a) Plain radiograph shows micronodular lesions throughout both lungs, which are more prominent in the upper and middle zones. b) High-resolution CT scans of the chest at the level of the right upper lobar bronchus. Kyoko Yagyu et al. breathe 2012;9:63-66 ©2012 by European Respiratory Society