Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is top normal . Mediastinal and hilar contours are unremarkable , with mild aortic knob calcifications demonstrated . The pulmonary vascularity is normal and the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is identified . Clips in the right upper quadrant of the abdomen indicate prior cholecystectomy .
    OUTPUT:
    
No acute cardiopulmonary abnormality .