Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is upper limits of normal in size . The aorta is tortuous and calcified , without change . The lungs are grossly clear , and there are no pleural effusions or acute skeletal findings . Minimal focus of linear scar in the periphery of the right lower lobe is again demonstrated .
    OUTPUT:
    
No radiographic evidence of pneumonia .