Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Marked cardiomegaly again seen . Retrocardiac increased density due to atelectasis and probably effusion . Left chest tube in place . Mediastinal drain tubes in place . ET tube above the carina . Swan - Ganz catheter in the right main pulmonary artery . NG tube in stomach . No pneumothorax .
    OUTPUT:
    
Essentially no interval change since ___ .