Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No free air is identified under the diaphragm . Pulmonary vascular congestion is mild . Right lung base opacity is likely atelectasis . There is no large pleural effusion . Moderate cardiomegaly is similar to before .
    OUTPUT:
    
No free air is identified under the diaphragm . Pulmonary vascular congestion is mild .