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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
low attenuation (table ... seen and in many cases ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... Interstitial - Reticular ... mass - Solitary Pulmonary ... Nodule - Multiple Masses ... Consolidation #Patterns #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
histologic pattern of pulmonary ... On a chest X-ray ... A HRCT is needed ... #Clinical #Radiology ... #Honeycombing #RadiologyAssistant
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
dominant HR-pattern: reticular ... #Pulmonary #HRCT ... #CTChest #Interpretation ... #Algorithm #ILD ... #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... listed in the table ... morphologic findings on HRCT ... #Pulmonary #CTChest ... #Findings #RadiologyAssistant
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
non-perfused vessels and causes ... with old fims can ... during a period of CHF ... #Clinical #Radiology ... Redistribution #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
differential diagnosis (Table ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #Reticular ... #Differential #RadiologyAssistant
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
left a typical case ... the other hand, mild ... difficult to detect on HRCT ... #CTChest #Panlobular ... PanlobularEmphysema #RadiologyAssistant