A 15-Year-Old Boy with Anterior Chest Pain, Progressive Dyspnea, and Subcutaneous Emphysema of the Neck
Figure 1
(a) Posteroanterior
chest radiograph that shows the mediastinal reflections of the pleura separated from the pericardium by a lucent band of air representing pneumomediastinum (arrows). (b) Lateral chest radiograph that shows the outer border of the ascending and descending thoracic aorta, which are underlined by mediastinal free air collection (arrows).
