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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
on the basis of HRCT ... findings. ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Differential #Diagram #Comparison
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
on HRCT and histology ... these patterns are ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... On HRCT there are ... based on the x-ray findings ... #Diagnosis #Radiology ... #Pulmonary #CXR
On the left two different patients with similarl HRCT findings.
The left one is a smoker with
with similarl HRCT ... findings. ... #Clinical #Radiology ... #CTChest #RBILD ... #Comparison #HypersensitivityPneumonitis
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
Acute interstitial ... findings in AIP ... #Clinical #Radiology ... #CTChest #AIP # ... AcuteInterstitialPneumonia #ILD
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
interpretation of HRCT ... there additional findings ... #Pulmonary #HRCT ... #CTChest #Interpretation ... #Algorithm #ILD
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
HRCT findings in ... . - Additional findings ... #Clinical #Radiology ... #CTChest #COP # ... Organizing #Pneumonia #ILD
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
show very similar HRCT ... findings ... fibrotic changes are ... #CTChest #UIP # ... Comparison #Chronic
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
with subtle HRCT-findings ... in this patient are ... interpretion of the HRCT ... #Clinical #Radiology ... #CTChest #RBILD
Lymphocytic interstitial pneumonitis or LIP is uncommon, being seen mainly in patients with autoimmune disease, particularly
underlying disease HRCT ... findings are usually ... #Clinical #Radiology ... #CTChest #LymphocyticInterstitialPneumonitis ... #LIP #ILD #RadiologyAssistant