Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is borderline enlarged . Mediastinal and hilar contours are unchanged . Minimal calcification at the aortic knob is seen . The pulmonary vascularity is normal . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormalities are present . Multilevel degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .