● Atresia means close, fistula means open.
● Esophageal atresia is when esophagus ends in a blind pouch, with no entry route to stomach.
● Tracheoesophageal fistula is an open connection between esophagus and trachea.
These two birth defects often appear together resulting from an abnormal intrauterine development. It is not inherited; however, they are often seen when babies have other birth defects such as trisomy 21 (down syndrome), diaphragmatic hernia and some congenital heart diseases.