Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is top - normal in size . The aorta is tortuous and shows mural calcification . Minimal bibasilar opacities suggest atelectasis . The lung volumes are low , which accentuates bronchovascular markings . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Low lung volumes . Streaky basilar opacities consistent with atelectasis .