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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
interstitial lung disease ... there are four patterns ... low attenuation (table ... seen and in many cases ... #Differential #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... listed in the table ... specific patterns ... realise, that these patterns ... #Findings #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
the left some diseases ... with a nodular pattern ... CTChest #Nodular #Pattern ... Differential #Comparison #Table ... #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... to look at the pattern ... more than one pattern ... lobar pneumonia caused ... #RadiologyAssistant
On the left a patient with GGO as dominant pattern.
In addition there is traction bronchiectasis indicating
GGO as dominant pattern ... of the possible patterns ... relatively uniform pattern ... collagen vascular diseases ... #GGO #RadiologyAssistant
Ground-glass opacity is nonspecific, but highly significant finding since 60-80% of patients with ground-glass opacity on
treatable lung disease ... the lung disease ... the ground-glass pattern ... Radiology #CTChest #GroundGlass ... #GGO #RadiologyAssistant
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
is a reticular patern ... recognized that this pattern ... was caused by multiple ... many inhalational diseases ... Histiocytosis #Cystic #RadiologyAssistant
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
idiopathic lung disease ... The histologic pattern ... progression of disease ... AcuteInterstitialPneumonia #ILD ... #RadiologyAssistant
In the images on your left you can appreciate again the spectrum of findings seen in
connective tissue disease ... , all cases were ... fine reticular pattern ... NonspecificInterstitialPneumonia #ILD ... #RadiologyAssistant