Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is top - normal in size , with re - demonstration of aortic arch calcifications and tortuous descending thoracic aorta . The lungs are grossly clear , with streaky left lower lobe opacities compatible with atelectasis . No pneumothorax , pleural effusion , or pulmonary edema is present .
    OUTPUT:
    
No evidence of pneumonia .