Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post revision sternotomy . The tip of the endotracheal tube projects 3 .4 cm from the carina . A gastric tube extends into the stomach . The tip of the left PICC line likely extends to the cavoatrial junction . A left internal jugular sheath is in situ . Multiple mediastinal drains and chest tubes are present . The size the cardiac silhouette is enlarged but unchanged . There is a retrocardiac opacity which likely reflects a combination of pleural fluid and atelectasis . No discrete pneumothorax identified . The right lung is grossly clear .
    OUTPUT:
    
Status post revision median sternotomy . No discrete pneumothorax identified . Retrocardiac opacities likely reflect a combination of pleural fluid and atelectasis .