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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
#Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential ... #Table #Distribution ... Central #Peripheral #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Pulmonary edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table ... #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
idiopathic interstitial pneumonias ... listed in the table ... morphologic findings on HRCT ... #Diagnosis #Radiology ... ILD #Findings #RadiologyAssistant
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 ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
On this lateral film there is too much density over the lower part of the spine.
By
density over the lower ... part of the chest ... in the right lower ... #Clinical #Radiology ... SilhouetteSign #RadiologyAssistant
On a normal lateral chest film the silhouette of the left diaphragm 2- can be seen
normal lateral chest ... all the way to anterior ... water-density in the right lower ... #CXR #Pneumonia ... SilhouetteSign #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
(Table). ... Kerley B lines on chest ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #RadiologyAssistant
Silhouette sign
This is a very important sign. It enables us to find subtle pathology and to
heart is located anteriorly ... When there is a pneumonia ... in the left lower ... #Diagnosis #Pathophys ... SilhouetteSign #RadiologyAssistant
Fleischner Society recommendations for follow-up of nodules
Previous chest radiographs should be reviewed to determine if the
nodules Previous chest ... lesion has been stable ... , which can be slower ... definitive tissue diagnosis ... Pulmonary #Nodules #RadiologyAssistant