Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Postsurgical changes are noted in the right upper lobe . Previously visualized tiny right apical pneumothorax is no longer clearly identified . The right hemidiaphragm remains elevated and there has been minimal increase in right lower lobe opacities likely representing a combination of small pleural effusion with adjacent atelectasis . However , an overlying infection can not be excluded . Cardiac and mediastinal silhouette structures remain stable . The left hemithorax is clear . No acute fractures are identified .
    OUTPUT:
    
Increased opacities at the right lung base likely representing a small pleural effusion with adjacent atelectasis . However , the overlying infectious process can not be excluded .