title: Endoscopic diagnosis of duodenal stenosis in a 5-month-old male infant.
abstract: Duodenal stenosis and duodenal atresia are well-known gastrointestinal anomalies in patients with Down syndrome. Although duodenal atresia presents early and classically with vomiting in the immediate neonatal period, the presentation of duodenal stenosis can be significantly more subtle and the diagnosis delayed. Here, we describe the case of a 5-month-old male infant with Down syndrome and delayed presentation of high-grade duodenal stenosis diagnosed endoscopically. Pediatric gastroenterologists should include duodenal stenosis in the differential diagnosis of older infants and children with vomiting and should be familiar with the endoscopic appearance of this lesion.
authors.affiliation: Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA.
authors.forename: Maribeth R
authors.initials: MR
authors.lastname: Nicholson
authors.affiliation: Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA.
authors.forename: Sari A
authors.initials: SA
authors.lastname: Acra
authors.affiliation: Department of Pediatric Surgery, Vanderbilt University School of Medicine, Nashville, TN, USA.
authors.forename: Dai H
authors.initials: DH
authors.lastname: Chung
authors.affiliation: Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA. ; Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Rosen
keywords: Down syndrome; Duodenal obstruction; Hematemesis