Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pleural effusions is slightly smaller than on the prior exam . Lungs are clear . There is no focal consolidation or pneumothorax . Cardiomediastinal silhouette is unremarkable . Median sternotomy wires are intact . Osseous structures are unremarkable .
    OUTPUT:
    
Right pleural effusion smaller than on the prior study .