47 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pneumonitis The ... Mosaic pattern with areas ... atenuation and areas ... Radiology #CXR #CTChest ... Chronic #Fibrosis #RadiologyAssistant
Ill defined centrilobular nodules of ground glass density in a patient with hypersensitivity pneumonitis #Clinical #Radiology
a patient with hypersensitivity ... pneumonitis #Clinical ... #Radiology #CTChest ... #Hypersenstitivity ... Centrilobular #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... pneumonitis: ill ... Hypersensitivity ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
histiocytosis - Hypersensitivity ... pneumonitis - Sarcoidosis ... is seen in: - UIP ... HRCT #ChestCT #Differential ... #Upper #Lower #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity ... pneumonitis: ill ... Radiology #Pulmonary #CTChest ... NodularPattern #Differential ... Comparison #Table #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
predominance: UIP ... pneumonitis, Respiratory ... Radiology #Pulmonary #CTChest ... #GroundGlass #Differential ... #RadiologyAssistant
This patient presented with acute dyspnoe and a normal chest film (not shown).
The HRCT at presentation
shows lobular areas ... pneumonitis. ... Clinical #Radiology #CTChest ... #Hypersensitivity ... #Resolution #RadiologyAssistant
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
alveolitis): • Hypersensitivity ... pneumonitis, Farmer's ... • Radiation pneumonitis ... Idiopathic Interstitial Pneumonias ... ILD #diagnosis #differential
Lung Nodules - Differential Diagnosis by Distribution
 • Centrilobular: Hypersensitivity Pneumonitis, RB-ILD, Pneumoconiosis, Infectious Bronchiolitis, Vasculitis,
Lung Nodules - Differential ... Centrilobular: Hypersensitivity ... Pneumonitis, RB-ILD ... , Amyloidosis, LIP ... Lung #Nodules #Differential
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
The differential ... pneumonitis. ... Hypersensitivity ... Clinical #Radiology #CTChest ... HypersenstitivityPneumonitis #RadiologyAssistant