Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate to large right pleural effusion which appears increased in size in comparison to a prior study . Adjacent air space atelectasis is present in the right lower lobe . Otherwise , the left lung appears clear . Mediastinal silhouette remains grossly stable where visualized . Visualized osseous structures are demineralized but stable .
    OUTPUT:
    
Increase in previously visualized right pleural effusion which is now moderate to large in size and occupies half of the hemithorax . These findings were discussed by Dr . ___ with Dr . ___ ___ telephone at 1 :00 pm on ___ .