Congenital duodenal atresia is a common cause of neonatal obstruction affecting 1 in 5000-10000 neonates. Laparoscopic management of this malformation is becoming increasingly common. However, few comparative studies exist and are often monocentric including few patients. This study will be multicentric, international and comparative to determine the place of laparoscopic surgery in the management of congenital duodenal atresia.

Inclusion criteria:

• Minor subject
• Subject having undergone neonatal surgery for congenital duodenal atresia or stenosis in the different participating centers between January 2009 and December 2019
• Subject (and/or his/her parental authority) who has not expressed, after information, his/her opposition to the reuse of his/her data for the purpose of this research

Criteria for non-inclusion:

• Subject (and/or his/her parental authority) who has indicated, after information, his/her opposition to the re-use of his/her data for the purposes of this research
• Conversion linked to a renunciation of the surgeon, procedure not started (optical introduction, unfeasibility by the surgeon due to lack of experience or technical impossibility)

Minor subject having undergone neonatal surgery for congenital duodenal atresia or stenosis in the different participating centers between January 2009 and December 2019