Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged , but smaller when compared to the prior examination . The abdominal aorta is tortuous and there is calcification at the aortic knob . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion do or pneumothorax identified . The lungs are hyperinflated . Subtle streaky bibasilar opacities are most consistent with atelectasis . No focal consolidations are identified .
    OUTPUT:
    
Minimal bibasilar atelectasis . No evidence of pneumonia or pneumothorax .