Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval right upper lobectomy . Right - sided chest tube in good position . No definite pneumothorax . There is right lower lobe basal opacity likely atelectasis . There is volume loss in the right lung . The left lung is relatively clear , with crowding of the bronchovascular markings .
    OUTPUT:
    
Status post right upper lobectomy . No pneumothorax .