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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... Lung cysts (LAM, LIP ... low attenuation pattern ... Radiology #Pulmonary #CTChest ... Emphysema #SignetRing #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
in ground glass pattern ... predominance: UIP ... Radiology #Pulmonary #CTChest ... GroundGlassOpacity #GroundGlass ... #Differential #RadiologyAssistant
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
Radiology #CXR #UIP ... #CTChest #Reticular ... #Interstitial #Pattern ... #Honeycombing # ... TractionBronchiectasis #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
On a Chest X-Ray ... detected on a chest ... histiocytosis or honeycombing ... in many cases UIP ... #Differential #RadiologyAssistant
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
On a chest X-ray ... demonstrating honeycombing ... HRCT demonstrated honeycombing ... #Honeycombing # ... RadiologyAssistant
Honeycombing represents the second reticular pattern recognizable on HRCT.
Because of the cystic appearance, honeycombing is also
second reticular pattern ... low attenuation pattern ... interstitial pneumonia (UIP ... Clinical #Radiology #CTChest ... #RadiologyAssistant
On the left a patient with GGO as dominant pattern.
In addition there is traction bronchiectasis indicating
regions of the lower ... fibrosis with honeycombing ... Clinical #Radiology #CTChest ... NonspecificInterstitialPneumonia #GroundGlass ... #GGO #RadiologyAssistant
The case on the left shows subpleural honeycomb cysts in several contiguous layers.
There is also a
There is also a lower ... Interstitial Pneumonia (UIP ... Clinical #Radiology #CTChest ... Bronchiectasis #Honeycombing ... #RadiologyAssistant
On the left another case of UIP.
The lower zone predominance is demonstrated when you scroll through
another case of UIP ... Clinical #Radiology #CTChest ... #UIP #UsualInterstitialPneumonia ... Bronchiectasis #Honeycombing ... #RadiologyAssistant
On the left a chest film of a patient with UIP due to IPF.
The findings on
a patient with UIP ... appearance of honeycombing ... reticulation with a lower ... preference also think 'UIP ... Reticular #ILD #RadiologyAssistant