Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Aorta is mildly tortuous and demonstrates diffuse atherosclerotic calcifications . Crowding of the bronchovascular structures is a result of the low lung volumes . There is no overt pulmonary edema , though mild pulmonary vascular congestion may be present . Streaky opacities in the lung bases likely reflect atelectasis , similar compared to the prior exam . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with crowding of the bronchovascular structures and mild bibasilar atelectasis , similar compared to the prior exam . No acute osseous abnormalities are detected . If there is continued concern for rib fracture , a dedicated rib series is recommended .