Luftsichel sign (lungs)
A known case of left upper lobe non-small cell lung cancer.
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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.
2 case questions available
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.