Representative CT images for mycobacterial infections. Shown are images for (A) M. tuberculosis, with cavities (arrows), in a 35 y.o. foreign-born individual with no predisposing risk factor for NTM, (B) M. kansasii, with cavity (arrow), in a 51 y.o. male with COPD, (C) M. avium, with nodule (arrow), in a 70 y.o. female with COPD, and (D) M. xenopi, with 7 cm peripheral wedge shaped consolidation (arrow) with air cavities, in 66 y.o. male with COPD.