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Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
areas. ... due to chronic ... Radiology #Pulmonary #CTChest ... #Attenuation #Differential ... #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
The clue here is
glass pattern in a mosaic ... (arrow) in the areas ... caliber due to chronic ... Clinical #Radiology #CTChest ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
expiratory scan: the mosaic ... mid and lower lung ... included in the differential ... Clinical #Radiology #CTChest ... HypersensitivityPneumonitis #Fibrosis #RadiologyAssistant
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
bronchiolitis or chronic ... Clinical #Radiology #CTChest ... MosaicAttenuation #Mosaic ... #Attenuation #Comparison ... #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
HP (right) Differential ... throughout the whole lung ... Diagnosis #Radiology #CTChest ... #UIP #Comparison ... Fibrosis #Mimic #ILD #RadiologyAssistant
On the left a patient who is treated with cytotoxic drugs for a hematologic malignancy.
The radiographic
and non-specific interstitial ... or fibrosis in chronic ... consider drug-related lung ... disease in the differential ... Clinical #Radiology #CTChest