Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Multiple old healed rib fractures are again noted . Focal linear scarring in the lingula with otherwise clear lungs . Unremarkable cardiomediastinal silhouette . No pneumothorax . Postsurgical changes noted at the right glenohumeral joint . No pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary abnormality .