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.
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Accepted: October 31, 2012
Received in revised form: October 30, 2012
Received: September 6, 2012
☆Disclosures: The authors have no disclosures or financial support to report with regards to this manuscript.
© 2013 Published by Elsevier Inc.