1. Bronchiectasis  (Trust Mark: Doctor-Reviewed)
Bronchiectasis is destruction and widening of the large airways. If the condition is present at birth, it is called congenital bronchiectasis; If it develops later in life, it is called acquired bronchiectasis.• Reviewer: Benjamin Medoff, MD, Assistant Professor of Medicine, Harvard Medical School, Pulmonary and Critical Care Unit, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.