Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The cardiac , hilar and mediastinal contours are normal . No pleural abnormality is seen . There are approximately 3 punctate densities projecting over the region of the aortic valve . These could potentially be calcific or metallic .
    OUTPUT:
    
No acute cardiopulmonary process . Small high density potentially metallic and / or calcific densities projecting over the region of the aortic valve .