CTICasesEx-vacuo Pneumothorax following Endobronchial Valve Placement
Imaging findings
Rapid collapse of the right upper lobe following placement of endobronchial valves for severe emphysema, leading to an ex-vacuo pneumothorax confined to the space vacated by the collapsed lobe.
Key takeaways
Ex-vacuo pneumothorax occurs due to rapid volume loss of a lobe causing increased negative pressure in the pleural space, rather than a pleural breach. It is distinct from pneumothorax caused by chronic pleural disease.
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