Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiograph demonstrates clear lungs bilaterally . Several bilateral healed rib fractures are noted . There is no pleural effusion or pneumothorax . No evidence of overt pulmonary edema . Cardiomediastinal and hilar contours are stable appearance . Degenerative changes at bilateral glenohumeral joints and acromioclavicular joints noted .
    OUTPUT:
    
No acute intrathoracic abnormality . Multiple bilateral healed rib fractures again noted .