Does naval aviation lead to spontaneous pneumothorax?

Rare: In normal patients aviation does not lead to spontaneous pneumothorax. In people who have bullous disease or blebs (abnormal lung tissue that form large air sacs) pressure changes may lead to a higher risk of spontaneous pneumothorax. A person who already has had an episode of pneumothorax has as high as a 50% chance of having a recurrence without definitive treatment..