<unk>  can occur as part of medical procedures, such as the insertion of a central venous catheter in the subclavian vein or jugular vein. While rare, it is considered a serious complication and needs immediate treatment. Other causes include mechanical ventilation, emphysema and rarely other lung diseases such as pneumonia.
Pneumothorax causes
Pneumomediastinum causes
Hemothorax causes
Pleurisy causes
Acute bronchitis causes
Pleural effusion causes
Aspiration pneumonia causes
Subcutaneous emphysema causes