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There are three principal varieties of pulmonary edema: cardiac, overhydration and increased capillary permeability (ARDS). 
The
The vascular pedicle ... Clinical #Radiology #CXR ... #CHF #Vascular ... #Comparison #VascularPedicleWidth ... #RadiologyAssistant
On the left another patient with alveolar edema at admission, which resolved after treatment.
When you scroll
difference in vascular ... pedicle width and ... Clinical #Radiology #CXR ... #CHF #Alveolar ... #Pulmonary #Edema
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
The pulmonary vascular ... In these cases comparison ... pedicle (red arrows ... Clinical #Radiology #CXR ... Redistribution #RadiologyAssistant
Congestive heart failure
The findings are:
 - bilateral perihilar consolidation with air bronchograms and ill-defined borders
 -
probably a large vascular ... pedicle All these ... edema due to heart ... Clinical #Radiology #CXR ... #CHF #RadiologyAssistant
Congestive heart failure (CHF) is the result of insufficient output because of cardiac failure, high resistance
edema. ... can be seen on a chest-film ... #CXR #Features ... #Findings #Diagram ... #RadiologyAssistant
On the left a patient with CHF. 
There is an increase in heart size compared to
redistribution of pulmonary ... , interstitial edema ... that helpful, but comparison ... Clinical #Radiology #CXR ... #Comparison #RadiologyAssistant
Stage III - Alveolar edema
This stage is characterized by continued fluid leakage into the interstitium, which
increased width of the vascular ... pedicle (red arrow ... Clinical #Radiology #CXR ... #CHF #Alveolar ... #Pulmonary #Edema
Previous normal chest x-ray (left) and CHF stage II with perihilar haze (right). On the left
Previous normal chest ... diameter of the pulmonary ... Clinical #Radiology #CXR ... Vascular #Engorgement ... #Thickening #RadiologyAssistant
Dilation of the azygos vein is a sign of increased right atrial pressure and is usually
the width of the vascular ... pedicle. ... increase of 3 mm in comparison ... Clinical #Radiology #CXR ... #CHF #Azygous #