Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the study from the prior day , there has been some interval mild improvement in the patchy alveolar infiltrate on the right ; however , there is persistent alveolar edema . The heart size continues to be mildly enlarged . There is a mildly tortuous aorta .
    OUTPUT:
    
Mild improvement in fluid overload but still persistent .