Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , and the aorta is tortuous . Chain sutures are noted within the right lower lung field , compatible with prior resection , with evidence of slight volume loss in the right lung as denoted by mild rightward shift of mediastinal structures . Linear opacities in the lung bases likely reflect atelectasis , without focal consolidation demonstrated . The pulmonary vasculature is not engorged , and there is no pneumothorax or pleural effusion . Multilevel degenerative changes are present within the thoracic spine .
    OUTPUT:
    
No evidence for pulmonary edema . Postsurgical changes in the right lung lower lung field , and atelectasis in the lung bases .