Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is large right pleural effusion with overlying atelectasis , underlying consolidation is not excluded . The left lung is clear . No evidence of a left - sided pleural effusion is seen . The right aspect of the cardiac silhouette is not well assessed due to the large right mid to lower hemithorax opacification , however , the left aspect of the cardiomediastinal silhouette is grossly unremarkable . No pulmonary edema is seen .
    OUTPUT:
    
Large right pleural effusion with overlying atelectasis , underlying consolidation not excluded .