Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable view of the chest is compared to previous exam from ___ . Compared to prior , there has been no significant interval change . Mildly increased interstitial markings are seen throughout the lungs bilaterally without frank pulmonary edema . Silhouetting of the left hemidiaphragm may be in part due to technique or atelectasis ; however , small effusion is not excluded . The cardiac silhouette is massively enlarged but stable .
    OUTPUT:
    
No significant interval change . Mild congestive failure with massive cardiomegaly , unchanged from prior .