Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Thickness improvement in bilateral patchy pulmonary opacities . Severe cardiomegaly stable . No pneumothorax or pleural effusion . Left ventricular assist device in standard position , left HD catheter terminates in the proximal right atrium , Swan - Ganz catheter terminates in the right main pulmonary artery , NG tube terminates in the stomach and ETT measures 3 .6 cm above the carina .
    OUTPUT:
    
Significant improvement in bilateral pulmonary opacities in comparison to chest radiograph performed earlier on the same day .