Infection
ABPA
Known Upper Lobe Latent TB
Basilar Bronchiolectasis Probable Childhood Infection
COPD Latent TB Basilar Bronchiolectasis
Inflammation
ABPA
DIP
Bronchiolectasis Mosaicism and the Secondary Lobule
Malignancy Mechanical/Atelectasis Trauma Metabolic Circulatory- Hemorrhage Immune Infiltrative Idiopathic Iatrogenic Idiopathic