Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heterogeneous , lower lobe predominant opacities are relatively similar compared to the prior exam , but are markedly improved compared to ___ radiograph . Heart is upper limits of normal in size , and accompanied by pulmonary vascular congestion and peribronchial cuffing . Bilateral pleural effusions are small in size . Linear atelectasis in the right middle lobe region is incidentally noted .
    OUTPUT:
    
1 . Improving heterogeneous bilateral lower lobe opacities , which could be due to atelectasis and / or aspiration . 2 . Small bilateral pleural effusions . 3 . Mild pulmonary vascular congestion .