Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . A small right pleural effusion persists , overall unchanged . A left pleural effusion is tiny . Pulmonary vascular congestion is mild with minimal edema . Increased opacity in the right lung base is new from the prior exam and could reflect developing infection appropriate clinical scenario . Cardiomegaly is moderate , unchanged . No pneumothorax . Median sternotomy wires and mediastinal clips are unchanged . Linear opacities projecting over the left lateral midlung are unchanged since at least ___ , compatible with scarring .
    OUTPUT:
    
1 . Persistent low lung volumes with the overall unchanged bilateral right greater than left pleural effusions . 2 . Interval increased opacity in the right lower lung could reflect developing pneumonia in the appropriate clinical situation . 3 . Mild pulmonary vascular congestion .