X-ray
Frontal
Pneumomediastinum. Lucency at the left hemithorax with slight thickening of the left costophrenic sulcus chest indicative of supine pneumothorax. Small right pneumothorax. Subcutaneous emphysema.
Aortic knuckle is ill-defined and superior cardiomediastinal contour appears widened, although this may be due to supine positioning.