Bronchiectasis By Trevor Steinbach, MD, University of Colorado Reviewed / Revised Sep 2021 | Modified Sep 2022 View Patient Education Etiology Pathophysiology Symptoms and Signs Diagnosis Prognosis Treatment Key Points Topic Resources Bronchiectasis (Computed.. Bronchiectasis (X-Ray) Factors Predisposing to Bronchiec... Bronchiectasis is dilation and destruction of larger bronchi caused by chronic infection and inflammation.