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 Pneumothorax
Medically reviewed by Min Clinic Staff | Updated: January 2026
Pneumothorax: Free air in the chest outside the lung. Pneumothorax can occur spontaneously, follow a fractured rib or other trauma, occur in the wake of chest surgery, or be deliberately induced in order to collapse the lung.