Delayed Presentation of Duodenal Atresia

Background: The most common type of duodenal atresia (DA) (Type I), also known as duodenal web or membrane can present later in infancy or early childhood if the membrane or web is fenestrated. We describe six patients with delayed presentation of DA. Materials and Methods: Retrospective review of hospital records of six patients with delayed presentation of DA due to fenestrated web managed in Paediatric Surgery Department at a tertiary care institute over a period of 2 years (January 2019 to December 2020) was done. The data of these patients were analysed on the basis of age at presentation, clinical presentation, associated anomalies, radiological findings, intra‑operative findings, management and postoperative course. Results: The median age at presentation was 6.5 months (range: 1 month to 10 years). There were four males and two females. The most common presentation was emesis seen in all six patients. Two patients had Down syndrome. Associated congenital anomalies were cardiac in one patient, anterior ectopic anus in one patient and malrotation of midgut in one patient. Upper gastrointestinal contrast suggested incomplete duodenal obstruction in all patients. At laparotomy, fenestrated duodenal membrane was observed in all patients – preampullary in three patients and postampullary in three patients. Lateral duodenotomy, web excision and transverse closure was done in all six patients. The postoperative period was uneventful in all patients and mean duration of hospital stay was 9 days. Conclusion: Fenestrated duodenal webs present a diagnostic challenge to the paediatric surgeons because of delayed and variable clinical presentation. A modification of the present classification of DA has been proposed in this study which would help in better reporting of epidemiology and aid in early diagnosis of this congenital anomaly.