Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are relatively low lung volumes on the frontal view . Evidence of volume loss in the right upper lung is again seen , without retraction of the right hilum consistent with prior history of right upper lobectomy , similar in appearance as compared to the prior study , given differences in inspiration . The left lung is clear . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No significant interval change given differences in lung volumes . Again seen postoperative changes involving the right hemithorax .