Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is unremarkable . Diffuse , bilateral interstitial abnormalities are unchanged over night , and could be mild edema or chronic changes . Scarring is seen at the lung apices . No new focal consolidation is identified . There is no pneumothorax or pleural effusion . A left - sided pacemaker is seen with the leads terminating in the regions of the right atrium and right ventricle , not significantly changed since the prior examination .
    OUTPUT:
    
Possible mild pulmonary edema .