Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . Suture material in the right mid and upper lung , as well as projecting over the right hemithorax , are again noted . There is a right sixth rib partial resection again seen . The left lung is clear , with possible minimal subsegmental left lower lobe atelectasis . There is right pleural effusion , which is overall unchanged in distribution and size . There is extensive scarring in the right lung , which is not significantly changed from prior exam . Please note , given the extent of underlying distortion and scarring , a subtle pneumonia would be impossible to exclude . The overall cardiomediastinal silhouette appears grossly stable . No acute bony abnormalities are seen .
    OUTPUT:
    
Stable chronic changes in the right lung including scarring and distortion with postoperative change . Old right pleural effusion . Given the degree of underlying chronic abnormality , the possibility of a superimposed acute pneumonic process is impossible to exclude on the basis of this radiograph .