Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aortic knob is calcified . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal and the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality .