Luftsichel sign

Case contributed by Dr Mohammad Taghi Niknejad


38 Y/O patient with dyspnea

Patient Data

Age: 38
Gender: Male

Air lucency is seen outlines the aortic knukle.


You can see A para-aortic crescent of hyperlucency with sharp margins that extend from the apex of the left hemithorax to the left superior pulmonary vein.

Case Discussion

This appearance may be seen on left upper lobe collapse and called : Luftsichel sign ( A german word ; Luft = Air and Sichel = Sickle ) . The luftsichel sign represents the hyperexpanded superior segment of the left lower lobe interposed between the atelectatic left upper lobe and the aortic arch.

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Case information

rID: 20582
Published: 26th Nov 2012
Last edited: 16th Jul 2018
System: Chest
Tag: chest, sign
Inclusion in quiz mode: Excluded

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