Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine chest radiograph ___ at 13 :29 is submitted .
    OUTPUT:
    
Interval removal of mediastinal and chest tubes with no obvious pneumothorax identified , although the sensitivity to detect pneumothorax is diminished given supine technique . Endotracheal tube , right internal jugular Swan - Ganz catheter and nasogastric tube are unchanged in position . Status post median sternotomy with stably enlarged postoperative cardiac and mediastinal contours . Interval appearance of asymmetric mild pulmonary and interstitial edema . Probable small left effusion .