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There is an atelectasis of the left upper lobe.
You would not expect the apical region to
There is an atelectasis ... the luft sichel sign ... #CXR #Lateral #LUL ... #Lobar #Collapse ... #Luftsichel #Sign
The findings are:
 - Large density on the left with loss of cardiac silhouette.
 - High
indicate a total atelectasis ... probably partial atelectasis ... #CXR #Lateral #LUL ... #Lobar #Collapse ... #Luftsichel #Sign
Left lower lobe atelectasis - There is a triangular density seen through the cardiac shadow.
This must
Left lower lobe atelectasis ... is lower lobe atelectasis ... surrounded by the atelectatic ... Radiology #CXR #LLL ... #Lobar #Collapse
Luftsichel Sign in Left Upper Lobe Collapse - Chest X-Ray

An upper lobe collapse causes the collapse
Luftsichel Sign ... Sometimes the LLL ... the collapsed LUL ... #Luftsichel #Sign ... #LUL #Collapse
Lobar pneumonia
On the chest x-ray there is an ill-defined area of increased density in the right
Lobar pneumonia ... most likely a lobar ... This was an acute lobar ... AirBronchogram #RUL ... #Lobar #Pneumonia
The CT-images demonstrate the atelectasis of the left upper lobe (blue arrow).
There is a centrally located
demonstrate the atelectasis ... Radiology #CTChest #LUL ... #Lobar #Collapse
Silhouette Sign on Chest X-Ray
Loss of the margin between two opposing structures of the same radiographic
Silhouette Sign ... localization by lobe • RUL ... hemidiaphragm • LUL ... heart border • LLL ... #Silhouette #Sign
Here are the most common examples of these four patterns on a chest x-ray (click image
Consolidation - Lobar ... Multiple Masses Atelectasis
Left upper lobe atelectasis
What are the findings?
 - Minimal volume loss with elevation of the left
Left upper lobe atelectasis ... findings indicate an atelectasis ... #CXR #Lateral #LUL ... #Lobar #Collapse
Right upper lobe atelectasis
Findings:
1) triangular density
2) elevated right hilus
3) obliteration of the retrosternal clear space (arrow)
Right upper lobe atelectasis ... Radiology #CXR #RUL ... #Lobar #Collapse