Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube tip is 4 .5 cm above the level of the carina and is in appropriate position . NG tube with side port below the gastroesophageal junction enters into proximal stomach and is out of view . Swan - Ganz catheter with tip in proximal right pulmonary artery is unchanged . Left brachial line with tip at the junction of subclavian and axillary vein . Mild interval improvement in moderate diffuse bilateral heterogeneous opacities with both interstitial and parenchymal components . No pneumothorax or pleural effusion . Heart size , mediastinal contour and hila are normal .
    OUTPUT:
    
1 . Right Swan - Ganz catheter tip is in the proximal right pulmonary artery and is unchanged . 2 . Mild improvement in diffuse moderate bilateral heterogeneous opacities which may represent moderate pulmonary edema .