Bronchiectasis Download English PDF, 984KB, PDF Download Chinese PDF, 771KB, PDF Bronchiectasis is a long-term lung condition where the airways become damaged and inflamed, causing them to become wider than normal. this results in excessive production and accumulation of sputum (phlegm) in the airways. The build-up of sputum can cause infections and further damage to the airways.Read on to find out the symptoms of bronchiectasis, how you can diagnose it early and how you can reduce the risk of lung infection in bronchiectasis. [Please download the PDF file if you are unable to view the image below.]