Faces of Centrilobular Nodules Infection Inflammation ABPA and Small Airway Disease Right Lower Lobe ABPA and Small Airway Disease Right Lower Lobe 54 year old female with history of asthma, bronchitis, bronchiectasis, ABPA Current CT scan shows extensive small airway disease in the right lower lobe, magnified in lower image with centrilobular nodules and thickened interlobular septa characterized by ground glass micronodules.Ashley Davidoff TheCommonVein.net Follicular Bronchiolitis CT Follicular Bronchiolitis, (BALT), Centrilobular Nodules, Air Trapping, Ground Glass Opacities (GGO) in Upper Lobes70-year-old female former smoker with long standing history of RA presents with chronic dyspnea.Axial CT of the chest at the level of the aortic arch reveals centrilobular nodules (b, white arrowheads) , ground-glass opacities, and mosaic attenuation (b, white rings) likely due to air trapping in this context, and bronchial wall thickening (b, c teal rings). There is some irregular thickening of the interlobular septa. In the context of a patient with rheumatoid arthritis a diagnosis of follicular bronchiolitis is likely. However radiologically fibrotic hypersensitivity pneumonitis (HP) is included in the differential diagnosisAshley Davidoff MD TheCommonVein.net 132Lu 136652cL CT Follicular Bronchiolitis, Centrilobular Nodules, Air Trapping, Ground Glass Opacities (GGO) in Lower Lobes70-year-old female former smoker with long standing history of RA presents with chronic dyspnea.Axial CT of the chest at the level of the lower lung fields reveals centrilobular nodules (b white arrowheads), ground-glass opacities, and mosaic attenuation (b, white rings) likely due to air trapping in this context.In the context of a patient with rheumatoid arthritis a diagnosis of follicular bronchiolitis is likely. However radiologically fibrotic hypersensitivity pneumonitis (HP) is included in the differential diagnosisAshley Davidoff MD TheCommonVein.net 132Lu 136657cL CT Follicular Bronchiolitis, , Centrilobular Nodules, Air Trapping, Ground Glass Opacities (GGO)70-year-old female former smoker with long standing history of RA presents with chronic dyspnea.CT in the coronal plane of the chest at the level of the spine reveals bilateral diffuse changes in the lungs characterized by centrilobular nodules, ground-glass opacities, mosaic attenuation (likely due to air trapping in this context) and irregular thickening of the interlobular septa.In the context of a patient with rheumatoid arthritis a diagnosis of follicular bronchiolitis is likely. However radiologically fibrotic hypersensitivity pneumonitis (HP) is included in the differential diagnosisAshley Davidoff MD TheCommonVein.net 132Lu 136663 CT Follicular Bronchiolitis, ), Centrilobular Nodules, Air Trapping, Ground Glass Opacities (GGO)70-year-old female former smoker with long standing history of RA presents with chronic dyspnea.CT in the coronal plane of the chest at the level of the spine reveals bilateral diffuse changes in the lungs characterized by centrilobular nodules, ground-glass opacities, mosaic attenuation (likely due to air trapping in this context) and irregular thickening of the interlobular septa.In the context of a patient with rheumatoid arthritis a diagnosis of follicular bronchiolitis is likely. However radiologically fibrotic hypersensitivity pneumonitis (HP) is included in the differential diagnosisAshley Davidoff MD TheCommonVein.net 132Lu 136664