Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . The lungs are well expanded . There is increased interstitial markings from prior exam , suggestive of a mild interstitial pulmonary edema . There is a small left pleural effusion . There is a trace right pleural effusion . No pneumothorax is seen . The cardiomediastinal silhouette is enlarged , unchanged from prior exam . A pacer is seen overlying the left anterior chest with intact leads in appropriate positions .
    OUTPUT:
    
1 . Increase interstitial markings from prior exam , suggestive of a mild interstitial pulmonary edema . 2 . Small right pleural effusion and trace left pleural effusion .