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Silhouette Sign on Chest X-Ray
Loss of the margin between two opposing structures of the same radiographic
Silhouette Sign ... heart border • RLL ... hemidiaphragm • LUL ... heart border • LLL ... hemidiaphragm #Silhouette
Here we see a consolidation which is located in the left lower lobe.
There is a normal
There is a normal silhouette ... CXR #Pneumonia #LLL
Here a typical lobar consolidation.
First study the images, then continue reading.
The findings are:
increased density with ill-defined
increased density with ill-defined ... lung the heart silhouette ... thus creating ill-defined ... AirBronchogram #LLL
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
Luftsichel Sign in Left Upper Lobe Collapse - Chest X-Ray

An upper lobe collapse causes the collapse
veil like opacity all ... Sometimes the LLL ... the collapsed LUL ... the air in the LLL ... Luftsichel #Sign #LUL
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
Abnormal Lipid Profiles - Differential Diagnosis Algorithm

Increased Cholesterol and Triglycerides 
 - Genetic Causes
Androgens Increased LDL ... • Familial LPL ... Deficiency • Apo-Cll
On the left another patient with a large cardiac silhouette on the chest x-ray due to
large cardiac silhouette