Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since 3 days prior , there are increased interstitial opacities bilaterally , reflect interval development of mild pulmonary edema . The degree of edema and fibrosis could conceivably obscure other parenchymal processes . Mild cardiomegaly is unchanged . Pleural effusions are small , if any .
    OUTPUT:
    
New , mild pulmonary edema superimposed on chronic interstitial lung disease .