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Ill defined centrilobular nodules of ground glass density in a patient with hypersensitivity pneumonitis #Clinical #Radiology
Ill defined centrilobular ... a patient with hypersensitivity ... pneumonitis #Clinical ... #Radiology #CTChest ... #Hypersenstitivity
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... pneumonitis: ill ... Hypersensitivity ... #Clinical #Radiology ... #HRCT #CTChest
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity ... pneumonitis: ill ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #CTChest #Nodular
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... histiocytosis - Hypersensitivity ... pneumonitis - Sarcoidosis ... edema #Diagnosis #Radiology ... #Pulmonary #HRCT
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Chronic hypersensitivity ... pneumonitis The ... pneumonitis are ... #Clinical #Radiology ... #CXR #CTChest #
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
pneumonitis The ... : ill-defined centrilobular ... There are ill-defined ... #Clinical #Radiology ... #CTChest #Hypersensitivity
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Pneumonitis, Respiratory ... Honeycombing: Idiopathic Pulmonary ... Differential #Diagnosis #pulmonary ... #radiology
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Organizing Pneumonia - Clinical ... ’s, Hypersensitivity ... eosinophilia pneumonia, Pulmonary ... Pneumonia #COP #BOOP #pulmonary ... #ILD #diagnosis
Here another case of subacute hypersensitivity pneumonitis.
There is subtle opacity in the centre of the secondary
case of subacute hypersensitivity ... pneumonitis. ... #Clinical #Radiology ... #CTChest #Hypersensitivity ... #Pneumonitis #HypersensitivityPneumonitis
Upper Lobe Lung Diseases - STAR CHASERS Mnemonic

S - Silicosis
T - Tuberculosis
A - Ankylosing Spondylitis
R -
Fibrosis H - Hypersensitivity ... caused by a rigid chest ... antigens: - Hypersensitivity ... pneumonitis - ... #STARCHASERS #radiology