Patients with interstitial lung disease (ILD) are often concerned about the occurrence of pneumothorax (collapsed lung) or other life-threatening events during air travel. However, new research shows that, even in ILD with a high prevalence of spontaneous pneumothorax, such as lymphangioleiomyomatosis (LAM), there is a relatively low risk of these events occurring. Researchers from the National Institutes of Health reviewed records and imaging studies of 449 patients with sarcoidosis, idiopathic pulmonary fibrosis, and LAM, who made a total of 816 trips by airplane and 416 trips by land.