Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The heart appears smaller in size compared to the prior examination on ___ . Right midlung and right lower lobe opacities are similar in appearance to multiple prior examinations . The left lung is clear . There is no pneumothorax or pleural effusion . Sternal wires are aligned . There is no evidence of pulmonary edema .
    OUTPUT:
    
No evidence of pulmonary edema . Persistent opacities involving the right midlung and base of the right lung are stable from multiple prior exams and likely reflect atelectasis or scarring .