Deep sulcus sign
Patient was involved in a motor vehicular accident sustaining rib fractures.
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Left sided tension pneumothorax secondary to multiple left rib fractures. Contralateral deviation of the mediastinum is appreciated.
Note of deep sulcus sign in AP supine view.
Reversal of the diaphragmatic dome and rounding of the ipsilateral sulcus.
Hyperlucent region devoid of lung markings.
Features suggest pneumothorax with presence of a deep sulcus sign.