Newborn with Trisomy 21 who has large residuals after feeding Pediatric Imaging Gastrointestinal February 18, 2024February 7, 2024 AP (above) and lateral (below) images from an UGI exam show a dilated stomach and first part of the duodenum. On a delayed image obtained 15 minutes later, no contrast was seen to have passed out of the duodenum into the remainder of the bowel. The diagnosis was duodenal atresia in a patient with Trisomy 21. Related Published February 18, 2024February 7, 2024