Most of the tracheal diverticula are congenital , usually small, small 3~5mm, large diameter up to 3cm.
The normal trachea is a columnar lumen surrounded by cricoid cartilage. During development, due to various factors, cystic lesions protruding outward from the wall of the lumen appear, usually round or oval, and the cystic vesicles form small chambers on the wall of the trachea, which may trap gas or liquid, and this lesion is called tracheal diverticulum.
Generally tracheal diverticula are small 3-5mm, most of them do not have obvious clinical symptoms and do not require treatment; if the diverticula are large up to 3cm, they may cause irritation to the airway and symptoms of coughing and sputum coughing; because the sac-like structure may store sputum, leading to recurrent airway infections, bronchitis, and in severe cases, there may be respiratory distress and symptoms of compression.
It is recommended to perform chest CT to check the size, the vast majority of no treatment, some anti-inflammatory, postural drainage treatment can be improved, unless there is recurrent infection, or the symptoms are serious, can be treated surgically.