The chest x-ray shows presence of pneumomediastinum as indicated on the image. There is no obvious pneumothorax.
The patient was managed with maximal medical therapy for asthma and their condition improved over the course of few days.
Chest x-ray in a child with asthma exacerbation is to be done when the patient does not respond to initial medical management and also in cases of moderate to severe exacerbations. One may be expected to see a pneumonia, lobar collapse, pneumothorax, pneumomediastinum etc.