Imaging modality | Pattern | Consistent ILD diagnoses, mimics of ILD, and/or complications of ILD |
---|---|---|
Routine CXR | Hilar lymphadenopathy | Sarcoidosis, silicosis, CBD, infection, malignancy |
Septal thickening | CHF, malignancy, infection, PVOD | |
Lower lung zone predominance | IPF, asbestosis, DIP, CTD, NSIP | |
Mid/upper lung zone predominance | Sarcoidosis, silicosis, acute HP, LCH, CBD, AS, chronic EP | |
Peripheral lung zone predominance | COP, chronic EP, IPF | |
Honeycomb change | IPF, asbestosis, chronic HP, sarcoidosis, fibrotic NSIP, CTD | |
Small nodules | Sarcoidosis, HP, infection | |
Cavitating nodules | PAG, mycobacterial infection, CA | |
Migratory or fluctuating opacities | HP, COP, DIP | |
Pneumothorax | PLCH, LAM, neurofibromatosis, TS | |
Pleural involvement | Asbestosis, CTD, acute HP, malignancy, sarcoidosis, Radiation fibrosis | |
Kerley B line prominence | Lymphangitic carcinomatosis, CHF | |
HRCT | Nodules | Sarcoidosis HP, CBD, pneumoconiosis, RA, malignancy |
Septal thickening | Edema, malignancy, infection, drug toxicity, PVOD | |
Cyst formation | LAM, LCH, LIP, DIP, SS | |
Reticular lines | IPF, asbestosis, chronic EP, chronic HP, CTD, NSIP | |
Traction bronchiectasis | IPF, other end-stage fibrosis | |
Honeycomb change | IPF, chronic EP and HP, asbestosis, sarcoidosis | |
Ground-glass opacity | AIP, acute EP, PAP, chronic EP, COP, lymphoma, sarcoidosis, NSIP, infection, hemorrhage |