High attenuation- Consolidation

The term consolidation refers to the presence of opacification that obscures the underlying vasculature. It is synonymous with airspace disease and implies that the air is replaced by blood, pus, oedema, or cells. It can also be caused by fibrotic changes.7

Special consideration of the distribution of consolidation is important for a successful differential diagnosis. Underlying causes for a peripheral or subpleural distribution can be: cryptogenic organising pneumonia, chronic eosinophilic pneumonia, atypical pulmonary oedema, Churg-Strauss syndrome, drug reactions, pulmonary contusion, pulmonary infarct, or sarcoidosis.9

High attenuation- Consolidation