Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prosthetic aortic valve is in unchanged position . Aeration of bilateral lungs are improved compared to 2 days ago . There is persistent bibasilar opacity with moderate right and trace left pleural effusions , similar to before . Enlarged cardiac silhouette is unchanged . Pulmonary vascular congestion is improved .
    OUTPUT:
    
1 . Pulmonary vascular congestion is improved . 2 . Moderate right lung base opacity and pleural effusion and small left lung base opacity and pleural effusion appear similar to 2 days ago .