Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral radiographs demonstrate low lung volumes , resulting in bronchovascular congestion and bibasilar atelectasis . Patient is status post median sternotomy , wires appear intact . Heart size is normal . Mediastinal and hilar contours are stable in appearance . There is no overt pulmonary edema . There is no pleural effusion . A dialysis catheter terminates in the atrium . No air under the right hemidiaphragm is seen . No acute osseous abnormality is detected . Interval of PICC line .
    OUTPUT:
    
Low lung volumes with bronchovascular congestion and bibasilar atelectasis .