Deep sulcus sign of supine pneumothorax
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Collapsed at work. History of pneumothorax on right side.
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ETT in situ.
The left costophrenic angle is partially excluded from the film.
Deep left costophrenic angle.
Normal right costophrenic angle.
No midline shift.
Deep sulcus sign is indicative of a pneumothorax on supine film.
This patient died and pneumothorax was proven at postmortem.