Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , there is large pleural effusion causing near complete opacification of right hemithorax and mediastinal shift to the right side . Because of the obscuration of the left mediastinal and cardiac borders , evaluation of the cardiomediastinal silhouette was limited . Right lung volume is low . Mild - to - moderate amount of atelectasis is present at lung base and pleural effusion , if any , is mild .
    OUTPUT:
    
Large right pleural effusion increased since ___ with mediastinal shift to the right side . Findings were discussed with Dr .___ by phone on ___ at 9 .10 AM