Tracheoesophageal_septum
Tracheoesophageal septum
Embryological structure dividing the trachea from the oesophagus
The tracheoesophageal septum is an embryological structure. It is formed from the tracheoesophageal folds or ridges which fuse in the midline. It divides the oesophagus from the trachea during prenatal development. Developmental abnormalities can lead to a tracheoesophageal fistula.