Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . Compared to prior study from 1 day ago , there is interval decrease in bibasilar opacities and improvement in lung ventilation bilaterally . Degree of pulmonary edema is largely unchanged . Cardiac silhouette has decreased in size . Hilar contours normal . There is no large pleural effusion . Right - sided subclavian line , nasogastric tube , and endotracheal tube are in appropriate positions .
    OUTPUT:
    
Substantially improved lung aeration compared to prior study from 1 day ago .