Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post right upper chest wall resection , right upper lobectomy with right apical scarring and upward traction of the right hilum from radiation fibrosis , all unchanged . There is no pleural effusion or pneumothorax . The left lung is clear . Heart size is normal .
    OUTPUT:
    
Interval resolution of right pleural effusion .