Luftsichel sign (lungs)

Case contributed by Dr Safwat Mohammad Almoghazy


A known case of left upper lobe non-small cell lung cancer.

Patient Data

Age: 69 years
Gender: Male

Chest Radiograph

A hazy or veiling opacity extending out from the left hilum and fading out inferiorly and obscured left heart border.

The left hilum is also elevated, resulting in an almost horizontal course of the left main bronchus and vertical course of the left lower lobe bronchus.

 Also, additional findings are the following:

  • elevation of the hemidiaphragm
  • 'peaked' or 'tented' hemidiaphragm: juxtaphrenic peak sign
  • crowding of the left-sided ribs compared to the contralateral side 

Acute and free both CP angles and intact bony thoracic cage. 

Case Discussion

The case was diagnosed as a non-small cell lung cancer, showing the above-mentioned findings of left upper lobe collapse due to bronchial invasion by the tumour. It also demonstrates the luftsichel sign due to the hyperexpanded superior segment of the left lower lobe insinuating itself between the left upper lobe and the superior mediastinum, sharply silhouetting the aortic arch and resulting in a lucency medially.

PlayAdd to Share

Case information

rID: 54303
Case created: 3rd Jul 2017
Last edited: 5th Jul 2017
System: Chest
Inclusion in quiz mode: Included

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.