Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube terminates 5 .7 cm above the carina . A right IJ catheter terminates at the mid to lower SVC . There is mild pulmonary edema . The opacity at the right lung base appears to be improving compared to prior studies likely resolving atelectasis . Opacification of the left lung base is likely due to the small pleural effusion with adjacent atelectasis . Since the prior radiograph performed 2 days earlier , there has been interval enlargement in the cardiomediastinal silhouette . No acute osseous abnormalities identified .
    OUTPUT:
    
1 . Endotracheal tube is appropriately positioned at 5 .7 cm above the carina . 2 . Interval enlargement of cardiomediastinal silhouette over past several days , which may be due to portable technique / change in patient positioning . Alternative diagnostic considerations include worsening heart failure vs . developing pericardial effusion .