Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes which accentuates the heart size , which is likely mildly enlarged . The aorta is unfolded . Crowding of the bronchovascular structures is noted . Calcified bilateral pleural plaques limit assessment of the underlying pulmonary parenchyma . There is a focal opacity noted within the left lung base , which could reflect an area of atelectasis or infection , but is nonspecific . Eventration of the right hemidiaphragm anteriorly is chronic . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Low lung volumes . Left basilar opacity may reflect atelectasis or infection in the correct clinical setting . Bilateral calcified pleural plaques compatible with prior asbestos exposure .