Abstract
Congenital anomalies of the lower respiratory tract in children are said to be uncommon diseases. The development of the lower respiratory tract in the intrauterine life starts as the primitive lung bud and the formation of bronchial tree is completed by 24th week. Thereafter, alveolar bronchioles, alveolar ducts and alveoli begin to develop, and then alveolar growth in number is completed by the age of 8 years.
Some disturbances that occur during the process of development of the respiratory tract could be the cause of the congenital anomalies of tracheobronchial tree.
In this paper, the author described the congenital agenesis, stenosis and anomalous branching of the tracheobronchial tree, and presented their symptoms, diagnosis, treatment and so on.
Congenital anomalies of the tracheobronchial tree usually show a variety of symptoms ranging from asymptomatic cases to those which require an emergency operation. It is necessary to make an early diagnosis and to start an appropriate treatment.
