Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are unremarkable . Mild calcifications are noted at the aortic knob . Lungs are clear . Pleural surfaces are clear without effusion or pneumothorax . Degenerative changes at the right shoulder .
    OUTPUT:
    
No acute cardiopulmonary abnormality .