Tension pneumothorax. (A) Scout image from chest CT demonstrates a left rib fracture (white arrowhead) and large left pneumothorax (white arrows). (B) Axial section from the CT scan demonstrates a large left pneumothorax as well as mild rightward mediastinal shift, suspicious for a tension pneumothorax. The patient was hemodynamically stable however. Radiographic evidence of tension physiology does not always correlate with the clinical syndrome, as demonstrated here.
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