Preschooler status post left central line placement Pediatric Imaging Chest August 23, 2019July 30, 2019 Supine CXR shows the left mediastinal and cardiac border is much more sharp in appearance than the right mediastinal and cardiac border. The diagnosis was a left-sided pneumothorax which was confirmed on a right lateral decubitus radiograph. Related Published August 23, 2019July 30, 2019