9 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
The HRCT shows a ... #Clinical #Radiology ... #CXR #CTChest # ... #HypersensitivityPneumonitis ... #RadiologyAssistant
This patient presented with acute dyspnoe and a normal chest film (not shown).
The HRCT at presentation
dyspnoe and a normal chest ... (left) shows lobular ... #Clinical #Radiology ... #Pneumonitis #HypersensitivityPneumonitis ... #Resolution #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
bronchovascular interstitium ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #NodularPattern ... #Differential #
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
Hypersensitivity Pneumonitis ... show very similar HRCT ... Clinical #Diagnosis #Radiology ... #CTChest #UIP # ... #Fibrosis #Mimic
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... bronchiolitis #Diagnosis #Radiology ... #Pulmonary #CTChest ... #GroundGlass #Differential ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
patterns: reticular, nodular ... On a Chest X-Ray ... detected on a chest ... #Diagnosis #Radiology ... #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
The differential ... are confluent, HRCT ... #Clinical #Radiology ... #CTChest #GGO # ... #RadiologyAssistant
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Low Attenuation Nodular ... Hypersensitivity Pneumonitis ... HiRes #HighRes #Chest ... Diagnosis #pulmonary #radiology
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
by fluid, fibrous ... Kerley B lines on chest ... Nodular or irregular ... #Diagnosis #Radiology ... #Pulmonary #HRCT