Toddler with difficulty feeding Pediatric Imaging Gastrointestinal April 9, 2019July 16, 2019 Lateral image from an UGI shows narrowing of the antrum of the stomach, which persisted throughout the exam. Sagittal US of the same region shows a cystic mass with an echogenic central rim. The diagnosis was gastric (antral) duplication which also involved the first portion of the duodenum. Related Published April 9, 2019July 16, 2019