17 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
key findings in ... The HRCT shows a ... #CXR #CTChest # ... #Pneumonitis #HypersensitivityPneumonitis ... Chronic #Fibrosis #RadiologyAssistant
This patient presented with acute dyspnoe and a normal chest film (not shown).
The HRCT at presentation
(left) shows lobular ... #Clinical #Radiology ... #CTChest #Hypersensitivity ... #Pneumonitis #HypersensitivityPneumonitis ... #Resolution #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
The differential ... diagnosis is hypersensitivity ... thromboembolic disease ... are confluent, HRCT ... #CTChest #GGO #
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
the left some diseases ... #Clinical #Diagnosis ... #CTChest #Nodular ... #Comparison #Table ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Smoking related diseases ... pneumonitis - Sarcoidosis ... Pulmonary edema #Diagnosis ... #HRCT #ChestCT ... #Differential #Table
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... patterns: reticular, nodular ... low attenuation (table ... #Diagnosis #Radiology ... #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... pneumonitis, Respiratory ... bronchiolitis #Diagnosis ... #CTChest #GGO # ... #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
pneumonias (IIPs ... listed in the table ... on HRCT and histology ... #Diagnosis #Radiology ... #Pulmonary #CTChest
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
diagnosis of Hypersensitivity ... Pneumonitis. ... show very similar HRCT ... findings ... #Radiology #CTChest
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Diagnosis Framework ... Lymphangitic Carcinoma, Interstitial ... Low Attenuation Nodular ... Pneumonitis, Respiratory ... #radiology