7 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pattern with areas ... The HRCT shows a ... mosaic pattern ... #Clinical #Radiology ... #Fibrosis #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
High Attenuation pattern ... Chronic eosinophilic ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
bronchiolitis in infection ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
On the left a patient with DIP.
The HRCT shows diffuse areas of ground-glass density in the
The HRCT shows diffuse ... lobes and some mosaic ... pattern as the ... DesquamativeInterstitialPneumonia #ILD ... #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
Subacute stage: - RB-ILD ... show very similar HRCT ... #CTChest #UIP #Comparison ... Fibrosis #Mimic #ILD ... #RadiologyAssistant
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
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bronchiolitis or chronic ... seen in: - (post) infection ... MosaicAttenuation #Mosaic ... #Attenuation #Comparison ... #RadiologyAssistant