Newborn with bilious vomiting Pediatric Imaging Gastrointestinal June 4, 2021May 12, 2021 AP image from an upper GI shows complete obstruction of the duodenum at the junction of the second and third parts of the duodenum and associated massive gastroesophageal reflux. A final image taken 5 minutes later was unchanged. The diagnosis was gastroesophageal reflux due to malrotation with midgut volvulus causing duodenal obstruction. Related Published June 4, 2021May 12, 2021