9 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
perilymphatic distribution ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... bronchiolitis (RB-ILD ... #HRCT #ChestCT ... #Differential #Table ... #Distribution #
The distribution of nodules shown on HRCT is the most important factor in making an accurate
on HRCT is the ... structures of the lung ... #Diagnosis #Radiology ... Perilymphatic #Comparison #Diagram ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
perilymphatic distribution ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... Differential #Comparison #Table ... #RadiologyAssistant
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 ... #Differential #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... morphologic findings on HRCT ... #Diagnosis #Radiology ... IdiopathicInterstitialPneumonia #ILD ... #Findings #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
show very similar HRCT ... strong lower zone distribution ... throughout the whole lung ... #Radiology #CTChest ... #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
(Table). ... Nodular or irregular ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #RadiologyAssistant
Risk factors
Defining high- or low-risk is currently more difficult than it was in the old guideline.
Previously
smoking, history of lung ... characteristics alone (See Table ... #Diagnosis #Epidemiology ... PulmonaryNodule #Nodule ... #RadiologyAssistant