Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large opacity projecting over the right mid - to - lower hemithorax , maybe due to combination of pleural effusion and atelectasis , although underlying consolidation is not excluded and is also of concern . Minimal left base retrocardiac opacity may relate to atelectasis , although an additional site of infection or aspiration is not excluded . No left pleural effusion is seen . There is no evidence of pneumothorax . The cardiac silhouette is not accurately assessed on the right due to the large right - sided opacity . Mediastinal contours are grossly unremarkable .
    OUTPUT:
    
Large opacity projecting over the right mid - to - lower hemithorax may represent combination of pleural effusion and atelectasis , underlying consolidation is not excluded . Recommend followup to resolution . Minimal left base retrocardiac opacity may relate to atelectasis , although an additional site of infection or aspiration is not excluded .