Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is moderately enlarged . The aorta is tortuous . Mediastinal and hilar contours otherwise are unremarkable . There is no pulmonary vascular congestion , focal consolidation , pleural effusion or pneumothorax . Multiple old bilateral rib fractures are noted , more extensive on the left . Multilevel degenerative changes are seen within the thoracic spine . No acute displaced fractures are clearly visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Remote bilateral rib fractures .