What causes bronchomalacia?

What causes bronchomalacia?

Bronchomalacia in newborns, known as primary bronchomalacia, is usually a result of:

• Congenital heart disease.
• Underdeveloped lung cartilage due to being born early.
• Williams-Campbell syndrome: Congenital (inherited) condition that causes weakened cartilage in the bronchi.

Bronchomalacia that isn’t present at birth is known as secondary bronchomalacia, and causes include:

• Chest injury.
• Chronic bronchitis.
• Emphysema.
• Long-term ventilator therapy.
• Tuberculosis (TB).
• Tumors or benign (noncancerous) growths in the lungs.