RESULTS: Most patients onset in the infantile period and presented with respiratory infections. Four patients were also identified with tuberculosis and 5 with fungal inflammation. CT findings included areas of consolidation (77.8%), ground-glass opacities (77.8%), randomly nodules and masses (77.8%), reticulation (83.3%), tree-in-bud opacities (83.3%), intralobular septal thickening (72.2%), areas of decreased attenuation and vascularity (61.1%), pulmonary scarring (72.2%), focal emphysemia (38.9%), bronchiectasis (38.9%), pleural effusion (72.2%). Cavities in masses and nodules could be found in 4 patients (22.2%), while 7 patients (38.9%) had necrosis in masses and consolidation. Fourteen patients (77.8%) showed mediastinal and/or hilar lymphadenopathy, especially 7 (38.9%) with ipsilateral axillary limph nodes enlargement and calcification after Bacille Calmette-Guerin (BCG) vaccine. Three patients (16.7%) demonstrated pulmonary artery enlargement, among them 1 (5.6%) with severe interstitial fibrosis presented with heart failure. Chest wall infection was found in 1 patient (5.6%), presenting osteomyelitis of the ribs and chest wall soft tissue invasion. All the laboratory exams were reviewed and CT findings could be associated with the infection of tuberculosis and fungus.