Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is normal . Lungs are hyperinflated . Patchy opacities noted in the right lung base . This could reflect atelectasis but infection is not excluded . Left lung is clear . No pleural effusion or pneumothorax is demonstrated . No acute osseous abnormalities seen . Remote left - sided rib fractures are noted . Extensive degenerative changes of the left glenohumeral joint are partially imaged .
    OUTPUT:
    
Patchy right basilar opacity may reflect atelectasis but infection can not be excluded in the correct clinical setting .