The causes of bronchiectasis are numerous. One of the most common
causes is a previous respiratory tract infection with adenovirus,
measles, influenza, pertussis, Staphylococcus aureus, or
Mycobacterium tuberculosis resulting in lung damage.
Aspiration of food or other foreign bodies (commonly, following the
loss of consciousness or as a result of swallowing disorders or
gastroesophageal reflux disease) may result in bronchiectasis.
Syndromes associated with bronchiectasis include primary ciliary
dyskinesia (Kartagener’s syndrome), immunodeficiency, middle-lobe
syndrome, and allergic bronchopulmonary aspergillosis.