Up to 75% of chest x-rays in patients presenting with asthma will have a normal chest x-ray. If chest x-ray abnormalities are present, findings include peribronchial thickening (related to airway inflammation), mucous plugging or hyperinflation. In addition, patients may present with complications of asthma, such as pneumothorax,  pneumomediastinum, atelectasis or superimposed infection.