Bronchiectasis is often caused by recurrent inflammation or infection of the airways. It may be present at birth, but most often begins in childhood as a complication from infection or foreign body aspiration.
Cystic fibrosis causes about 50% of all bronchiectasis in the United States today. Recurrent, severe lung infections (pneumonia, tuberculosis, fungal infections), abnormal lung defenses, and obstruction of the airway by a foreign body or tumor are some predisposing factors.
Symptoms often develop gradually, and may occur months or years after the event that causes the bronchiectasis.
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