Duodenum inversum: a report and review of the literature

J Pediatr Surg. 2013 Jan;48(1):e47-9. doi: 10.1016/j.jpedsurg.2012.10.066.


Duodenum inversum is a rare congenital malformation defined by a duodenum which travels superiorly and then posteriorly prior to crossing the midline above the pancreas. It is often confused with other, more common, anomalies of intestinal rotation. We present a case of duodenum inversum diagnosed incidentally in a one-month old infant with Trisomy 21 during evaluation for reflux disease. Due to an inability to definitively rule out malrotation, the diagnosis was confirmed with a diagnostic laparoscopy. We discuss available literature concerning this rare anatomic anomaly as well as provide recommendations for diagnosis and treatment.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Down Syndrome
  • Duodenum / abnormalities*
  • Humans
  • Incidental Findings
  • Infant
  • Male