Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are seen with clear left lung . In the right hemithorax , the lobulated apical pleural contour likely reflects a loculated pleural effusion with accompanying moderate - to - large right dependent pleural effusion and associated atelectasis . Supervening pneumonia can not be fully excluded .
    OUTPUT:
    
Large right pleural effusion with apical loculated component . Can not exclude underlying pneumonia . Please refer to subsequent Chest CT for further evaluation .