Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is left lower lobe opacity , new since ___ . Small to moderate right pleural effusion is also new . There is background interstitial lung disease . Cardiac silhouette is within normal size .
    OUTPUT:
    
Left lower lobe opacity and mild to moderate right pleural effusion are new since ___ . Background interstitial lung disease is again noted .