Left lower lobe collapse

Case contributed by Dr Ian Bickle


Smoker. Breathless. Cause?

Patient Data

Age: 65 years
Gender: Female

Triangular (or sail shaped) density behind the left heart border, with volume loss in the left hemi-thorax.

Inferior descent of the left hilum.

Right lung clear.

Case Discussion

The classical appearance of a left lower lobe collapse - the triangular density appearing like the sail of a traditional boat hence the term 'sail sign' attributed to this appearance.

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Case information

rID: 56368
Published: 28th Oct 2017
Last edited: 16th Jul 2018
System: Chest
Inclusion in quiz mode: Included

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