Infant with a prolapsing rectal mass Pediatric Imaging Gastrointestinal April 13, 2019July 16, 2019 AP and lateral images from a barium enema show an intraluminal lesion in the rectum. Axial and sagittal T2 MRI shows a cystic mass anterior to the rectum. The diagnosis was rectal duplication. Related Published April 13, 2019July 16, 2019