Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to study performed one day prior , there has been slight increase in the right basilar opacity . The left lung is clear . The cardiac silhouette remains markedly enlarged . There is a small unchanged right pleural effusion . No pneumothorax is identified . Median sternotomy wires are intact . Visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . Slight increase in right basilar opacity which may be due to atelectasis although infection can not be excluded in the appropriate clinical setting . 2 . Marked cardiomegaly . Unchanged small right pleural effusion .