Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable views of the chest were obtained . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are stable and unremarkable . Evidence of old right - sided rib fractures are again seen , involving at least the posterolateral right seventh and eighth ribs . Degenerative changes are seen at bilateral shoulder joints and the left acromioclavicular joint .
    OUTPUT:
    
No acute cardiopulmonary process .