34 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Fibrosis and parenchymal ... existing irreversible fibrosis ... #Clinical #Radiology ... HypersensitivityPneumonitis #Chronic #Fibrosis ... #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis ... Hypersensitivity pneumonitis ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
specific interstitial pneumonitis ... result of massive fibrosis ... #Clinical #Radiology ... Comparison #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity pneumonitis ... Hypersensitivity pneumonitis ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... Comparison #Table #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
HRCT as seen in fibrosis ... Hypersensitivity pneumonitis ... bronchiolitis #Diagnosis ... #Radiology #Pulmonary ... #Differential #RadiologyAssistant
On the left another typical case of sarcoidosis.
In addition to the perilymphatic nodules, there are multiple
sarcoidosis we will see fibrosis ... #Clinical #Radiology ... Peribronchovascular #Nodular ... #RadiologyAssistant
Longstanding Sarcoidosis
Here a typical chest film in a patient with long standing Sarcoidosis (stage IV).
There is
There is fibrosis ... The differential diagnosis ... hypersensitivity pneumonitis ... #Clinical #Radiology ... #RadiologyAssistant
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
- Differential Diagnosis ... Low Attenuation Nodular ... Hypersensitivity Pneumonitis ... #Differential #Diagnosis ... #pulmonary #radiology
Sometimes the centrilobular opacities are more nodular in appearance as in this case. #Clinical #Radiology #CTChest
opacities are more nodular ... #Clinical #Radiology ... Hypersensitivity #Pneumonitis ... HypersensitivityPneumonitis #Nodular ... Centrilobular #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
opacities - Fine Nodular ... Masses Atelectasis #Diagnosis ... #Clinical #Radiology ... Consolidation #Patterns #RadiologyAssistant