Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are viewed in comparison with prior study from two days earlier . Some linear atelectasis is seen in the right upper lobe and left retrocardiac region . No pneumothorax or pneumomediastinum is visible . Surgical clips are seen at the left axilla . Slight prominence of the ascending thoracic aorta is present with heart and mediastinal contours within expected limits for study done with small degree of inspiration . Focal kyphosis is seen at the thoracolumbar junction .
    OUTPUT:
    
No visible pneumomediastinum . Subsegmental atelectasis as described .