Teenager post cardiac arrest 1 day ago who had pneumomediastinum on an immediate post resuscitation CXR Pediatric Imaging Gastrointestinal August 30, 2024August 5, 2024 AXR (above) shows air outlining the right kidney and the inferior part of the liver. AXR (below) shows air outlining the ascending and descending colon and bladder. The diagnosis was pneumoretroperitoneum. Related Published August 30, 2024August 5, 2024