Luftsichel sign

Case contributed by Dr Farzaneh Shobeirian



Patient Data

Age: 40 years
Gender: Male

Complete collapse of the left upper lobe is appreciated.

There is a curvilinear air density at medial aspect of left apex which is compatible with left lower lobe hyperinflation (Luftsichel sign).


Luftsichel sign

There is complete collapse of the left upper lobe with truncation of the left upper lobe bronchus.

Ground-glass opacities are noted bilaterally in lower zones.

Unfortunately, the patient disagreed with further evaluations including bronchoscopy.


Case Discussion

The luftsichel sign is seen in some patients with left upper lobe collapse.

It appears as a curvilinear air density in frontal chest X-ray, between the mediastinum and the collapsed left upper lobe, due to hyperinflation of the superior segment of the left lower lobe.

The cause of the collapse is unknown in this case as the patient declined further investigations.

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Case information

rID: 76138
Published: 18th Apr 2020
Last edited: 18th Apr 2020
System: Chest
Inclusion in quiz mode: Included
Institution: Guilan University of Medical science

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