14 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... there are four patterns ... low attenuation (table ... The ground-glass ... seen and in many cases
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... nodules of ground-glass ... Radiology #Pulmonary #CTChest ... #Nodular #Pattern ... Differential #Comparison #Table
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... realise, that these patterns ... Radiology #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
pneumonitis The key findings ... opacity (80% of cases ... ) or mosaic pattern ... There are ill-defined ... Clinical #Radiology #CTChest
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
extensive ground glass ... extensive ground glass ... artifact); (G) UIP pattern ... #Correlation #Table ... #ILD #Findings
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 ... there additional findings ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm ... #ILD #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... edema: incidental finding ... Radiology #HRCT #CTChest ... #Reticular #Pattern ... #Comparison #Table
Ground-glass opacity is nonspecific, but highly significant finding since 60-80% of patients with ground-glass opacity on
Ground-glass opacity ... highly significant finding ... pattern is the ... associated HRCT findings ... Clinical #Radiology #CTChest
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
smoker with RB-ILD ... The dominant pattern ... is ground glass ... Additional findings ... Clinical #Radiology #CTChest
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
outcome in many cases ... The histologic pattern ... areas of ground-glass ... Clinical #Radiology #CTChest ... AcuteInterstitialPneumonia #ILD