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Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... x-ray there is an ill-defined ... most likely a lobar ... AirBronchogram #RUL ... #Lobar #Pneumonia
PA view
On the PA chest-film it is important to examine all the areas where the lung
important to examine all ... Silhouette - for ... These lines and silhouettes ... of the normal silhouette ... is called the silhouette
Silhouette Sign on Chest X-Ray
Loss of the margin between two opposing structures of the same radiographic
Silhouette Sign ... paratracheal stripe • RML ... heart border • RLL ... heart border • LLL ... hemidiaphragm #Silhouette
Lobar consolidation
The most common presentation of consolidation is lobar or segmental.
The most common diagnosis is lobar
Lobar consolidation ... consolidation is lobar ... common diagnosis is lobar ... Pulmonary #CXR #Lobar
Here are the most common examples of these four patterns on a chest x-ray (click image
Consolidation - Lobar ... consolidation - Multifocal ill-defined
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
- Lobar or focal ... usually multiple ill-defined ... For instance a lobar ... Consolidation #Lobar
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
Leukemias Overview: ALL ... CML, AML, APML, CLL ... age • 75% of ALL ... B-cell lineage ALL ... Mature B-cell ALL
Transposition of Great Arteries (TGA) on Chest XRay
 - Oval Shaped Cardiac Silhouette 
 - Narrow
Shaped Cardiac Silhouette
The PA-film shows a silhouette sign of the left heart border.
Even without looking at the lateral
PA-film shows a silhouette
Whenever you see an area of increased density within the lung, it must be the result
substances resulting in lobar ... or multifocal ill-defined