Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Pneumomediastinum
Medically reviewed by Min Clinic Staff | Updated: January 2026
Pneumomediastinum: Free air in the space between the lungs (mediastinum), which may give rise to pneumothorax or pneumopericardium and compromise the lungs or heart.