Moderate pneumomediastinum is seen extending superiorly into the neck and tracking laterally into the oblique fissures.
The pulmonary arteries opacify normally without filling defects to a subsegmental level, no pulmonary emboli detected. The lungs are within normal limits.
The upper abdominal viscera are unremarkable within the limitations of this study. Oesophagus appears normal and no pleural fluid identified.