CT
Axial lung window
Coronal lung window
Axial C+ arterial phase
What are some of the differentials to a spontaneous pneumomediastinum?
medial pneumothorax, pneumopericardium, pneumoperitoneum, pneumoretroperitoneum, Mach bands, subcutaneous emphysema
The pneumomediastinum extends to the diaphragm and extends into the retropharyngeal and carotid spaces of the partially imaged neck. There is no evidence as to the cause of this pneumomediastinum in this series.