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Esophageal stenoses are frequent complications after esophageal atresia surgery as well as after acid, alkali and battery ingestion. Worldwide, repeated balloon dilatations are the most frequently performed procedures for these stenoses. In most cases the stenoses can be dilated sufficiently to allow adequate enteral nutrition. Until recently, age dependent esophageal lumen size has not been established; which was aim of the current study.    Methods  All children in whom an esophageal contrast imaging was performed between 1/2011 and 5/2021 were included. The width was measured by two investigators at two measuring points in two planes, the diameter was calculated and plotted against the respective weight of the child. Bland-Altmann plots have confirmed the validity of the measurements of both investigators.    Results  Esophagus diameter was measured in more than 100 children. The resulting curves show a very good correlation with weight (upper measuring point:  r  = 0.86743,  p  &amp;lt; 0.0001; lower measuring point:  r  = 0.80593,  p  &amp;lt; 0.0001).    Conclusion  These results are the first to define the esophageal diameter in children. The results of this study may guide physicians performing esophageal interventions including dilatations in future.

Esophageal Diameter as a Function of Weight in Neonates, Children and Adolescents: Reference Values for Dilatation of Esophageal Stenoses