Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is top normal in size . Thoracic aorta appears tortuous with known calcifications within the arch . Cardiomediastinal contours are unremarkable . Lungs have normal volume and are clear with no focal areas of opacification to suggest acute pneumonia . No pleural effusions and no pneumothorax .
    OUTPUT:
    
Normal radiographic study of the chest .