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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... low attenuation (table ... On a Chest X-Ray ... seen and in many cases ... #Diagnosis #Radiology
Here are the most common examples of these four patterns on a chest x-ray (click image
on a chest x-ray ... Interstitial - Reticular ... Nodule - Multiple Masses ... Atelectasis #Diagnosis ... #Clinical #Radiology
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
On a chest X-ray ... manifests as a reticular ... to confirm the diagnosis ... #Clinical #Radiology ... #CXR #UIP #Reticular
Chest Pain - Differential Diagnosis Algorithm
Cardiovascular Causes:
 - Outflow Obstruction
     • Aortic
Diagnosis Algorithm ... Infarction • Stable ... ChestPain #Noncardiac #Cardiology ... #Differential #Diagnosis ... #Algorithm #causes
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... listed in the table ... have specific patterns ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... of reticular opacities ... (Table). ... #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
film is a reticular ... was caused by multiple ... challenging differential diagnosis ... #Clinical #Radiology ... #CXR #CTChest #
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... : reticular nodular ... #Radiology #Pulmonary ... #HRCT #CTChest ... Interpretation #Algorithm
In the images on your left you can appreciate again the spectrum of findings seen in
GGO with a fine reticular ... pattern. ... excluding UIP as diagnosis ... #Clinical #Radiology ... #CTChest #NSIP