Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . There is no effusion or pneumothorax . Minimal bibasilar atelectasis is present . There is elevation of the right hemidiaphragm as a result . The heart size is mildly enlarged , the mediastinal contours are normal . There is no intraperitoneal free air .
    OUTPUT:
    
1 . Low lung volumes and bibasilar atelectasis . 2 . Mild cardiomegaly .