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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
four patterns: ... low attenuation (table ... The cystic pattern ... histiocytosis or honeycombing ... in many cases UIP
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
pattern of pulmonary ... pattern particularly ... pattern at the ... This pattern was ... #Pattern #Honeycombing
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
interstitial pattern ... The HRCT demonstrates ... honeycombing and ... Radiology #CXR #UIP ... #Interstitial #Pattern
Honeycombing represents the second reticular pattern recognizable on HRCT.
Because of the cystic appearance, honeycombing is also
the second reticular ... pattern recognizable ... on HRCT. ... low attenuation pattern ... interstitial pneumonia (UIP
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
artifact); (G) UIP ... pattern with subpleural ... bronchiectasis, and honeycombing ... #Correlation #Table ... #ILD #Findings
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... morphologic findings on HRCT ... realise, that these patterns ... findings of NSIP, UIP
On the left a patient with DIP.
The HRCT shows diffuse areas of ground-glass density in the
a patient with DIP ... The HRCT shows diffuse ... and some mosaic pattern ... Reticular abnormalities ... DesquamativeInterstitialPneumonia #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 ... the dominant HR-pattern ... : reticular nodular ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
In the images on your left you can appreciate again the spectrum of findings seen in
GGO with a fine reticular ... pattern. ... Notice the lack of honeycombing ... cases, excluding UIP ... NonspecificInterstitialPneumonia #ILD