Preferred Label : Luftsichel sign;
Definition : Crescent- or sickle-shaped lucency adjacent to aortic arch on a frontal radiograph.
Suggests upper lobe collapse, with positioning of the lower lobe between the mediastinum
and the collapsed lobe.;
Source : Eisenberg, Ronald L. Atlas of Signs in Radiology.;
Origin ID : RID35355;
Associated condition(s)
Crescent- or sickle-shaped lucency adjacent to aortic arch on a frontal radiograph.
Suggests upper lobe collapse, with positioning of the lower lobe between the mediastinum
and the collapsed lobe.
