Embryology of oesophageal atresia

Adonis S. Ioannides, Andrew J. Copp

Research output: Contribution to journalArticle

35 Citations (Scopus)


Esophageal atresia (OA) and tracheoesophageal fistula (TOF) are important human birth defects of unknown etiology. The embryogenesis of OA/TOF remains poorly understood, mirroring the lack of clarity of the mechanisms of normal tracheoesophageal development. The development of rat and mouse models of OA/TOF has allowed the parallel study of both normal and abnormal embryogenesis. Although controversies persist, the fundamental morphogenetic process appears to be a rearrangement of the proximal foregut into separate respiratory (ventral) and gastrointestinal (dorsal) tubes. This process depends on the precise temporal and spatial pattern of expression of a number of foregut patterning genes. Disturbance of this pattern disrupts foregut separation and underlies the development of tracheoesophageal malformations.

Original languageEnglish
Pages (from-to)2-11
Number of pages10
JournalSeminars in Pediatric Surgery
Issue number1
Publication statusPublished - Feb 2009


  • Atresia
  • Embryology
  • Malformations
  • Oesophagus
  • Separation
  • Tracheooesophageal

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