13 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
, high and low attenuation ... (table). ... it can be very difficult ... is also difficult ... #Diagnosis #Radiology
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation ... pattern 1. ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation ... pattern (2) 1. ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
High Attenuation ... pattern (2) 1. ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
High Attenuation ... pattern 1. ... consolidation #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
Reticular It can be difficult ... or a cystic pattern ... the CXR it is difficult ... #Clinical #Radiology ... #CXR #CTChest #
Here an example of a large lesion in the right lower lobe, which is difficult to
lobe, which is difficult ... you give special attention ... #Clinical #Radiology ... #CXR #CTChest #
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
This makes it difficult ... we describe a chest ... #Differential #Table ... Pulmonary #Diagnosis #Radiology
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 ... consolidation) low attenuation ... bronchiectasis) #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... : ground glass attenuation ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table