Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large right pleural effusion is demonstrated , substantially increased in size compared to the ___ exam , with near complete opacification of the right hemi thorax and atelectasis of the right lung . Minimal residual aerated lung is seen within the right upper lobe . There is leftward shift of the mediastinal structures , new in the interval . No pulmonary vascular congestion is demonstrated . The left lung is without focal consolidation , pleural effusion , or pneumothorax . Previously described right apical nodule is obscured on the current exam . Central venous catheter from an inferior approach is in unchanged position . The patient is status post mastectomy with numerous clips again noted in the right axilla .
    OUTPUT:
    
Substantial interval increase in size of the right pleural effusion which is now large with associated right lung atelectasis .