Embryology
The oesophagus and trachea are formed by septal division of the caudal part of the foregut by the seventh week of gestation.
Atresia results from a posterior deviation of the septum.
Reference
- Durkin N, De Coppi P. Anatomy and embryology of tracheo-esophageal fistula. Semin Pediatr Surg. 2022 Dec;31(6):151231.
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