CTICasesBarotrauma
Imaging findings
Chest radiograph shows an outline of the left main bronchus and right tracheal wall due to air on both sides (double tracheal wall sign), and chest CT confirms extensive pneumomediastinum secondary to ventilator-induced barotrauma.
Key takeaways
Ventilator-induced barotrauma can cause alveolar rupture and dissecting gas along bronchovascular sheaths into the mediastinum, presenting as pneumomediastinum. Radiographic signs include the double tracheal wall sign, where the tracheal wall is outlined by intraluminal and extraluminal gas.
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