Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung apices are obscured by the patient 's head . The heart is mildly enlarged . The hilar and mediastinal contours are within normal limits . The lung volumes are very low , resulting in bronchovascular crowding . Linear bibasilar opacities likely reflect atelectasis . No focal consolidation is detected . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Bronchovascular crowding and bibasilar atelectasis secondary to low lung volumes . No consolidations detected .