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The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
anteriorly in the left lung ... consolidation due to a pneumonia ... Sterptococcus pneumoniae ... Radiology #CXR #Pneumonia ... SilhouetteSign #RadiologyAssistant
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
Pathogens in Pneumonia ... smoking. structural lung ... Burkholderia — structural lung ... dsease) - Anaerobes ... MAC (structural lung
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... lobar or segmental pneumonia ... weight loss or long ... an acute lobar pneumonia ... #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Chronic eosinophilic pneumonia ... with peripheral areas ... presenting as areas ... Chronic eosinophilic pneumonia ... Comparison #Table #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
idiopathic interstitial pneumonias ... responses of the lung ... and interstitial pneumonia ... involvement of the lung ... ILD #Findings #RadiologyAssistant
Tumor markers in clinical practice
Colorectal - CEA
Hepatocellular - AFP
Pancreatic - CA 19-9
Ovarian - CA 125
Breast -
Ovarian - CA 125 Breast ... cell - AFP, HCG Lung ... CYFRA 21-1, SCC Lung ... laboratory #diagnosis #oncology
Main Lung Ultrasound differences between COVID-19 involvement and other conditions that may yield respiratory symptoms
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Main Lung Ultrasound ... defined spared areas ... superimposed bacterial pneumonia ... more deaerated areas ... COVID19 #POCUS #Lung
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
periphery of the lung ... it is seen in pneumonias ... seen in chronic lung ... #Differential #RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
post-obstructive pneumonia ... - Lung neoplasms ... like organizing pneumonia ... chronic eosinophilic pneumonia ... #Differential #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... excludes eosinophilic pneumonia ... of organizing pneumonia ... Distribution #Organizing #Pneumonia ... OrganizingPneumonia #BOOP #RadiologyAssistant