Newborn with failure to pass meconium Pediatric Imaging Gastrointestinal April 24, 2019July 16, 2019 AXR shows a distal bowel obstruction. Water-soluble contrast enema shows normal caliber of the ascending and transverse colon and rectum, but decreased caliber of the descending (left) colon. The diagnosis was meconium plug syndrome. Related Published April 24, 2019July 16, 2019