tracheobronchomegaly

Tracheobronchomegaly is a rare lung condition characterised by abnormal widening of the trachea and main bronchi, typically presenting with no symptoms, or a long-standing cough or recurrent chest infections. There may be copious purulent sputum production, eventually leading to bronchiectasis and other respiratory complications.

It may be acquired secondary to another lung disease or medical lung procedure, but when no cause is identified it is presumed congenital and is known as Mounier-Kühn syndrome.