case_images: PMC5791506_01
case_images: Postoperative chest X-ray showing pneumopericardium - air within the pericardial cavity (1) following minimally invasive atrial septal defect closure with intercostal drain tube (2) in situ
case_images: ACA-21-99-g001.jpg
case_images: PMC5791506_01_ACA-21-99-g001.jpg
case_images: F1
case_images: In Intensive Care Unit, her first postoperative chest X-ray (CXR) revealed a continuous narrow radiolucent rim around the cardiac silhouette outlined by a fine line representing the pericardial sac [Figure 1].