Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is unchanged , top normal in size . The mediastinal and hilar contours are within normal limits given the low lung volumes . Bronchovascular crowding is present , but no overt pulmonary edema is noted . No focal consolidation , pleural effusion or pneumothorax is definitely seen . There is likely minimal atelectasis in the lung bases . No acute osseous abnormality is visualized .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .