Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate enlargement of the cardiac silhouette is unchanged . The aorta is calcified and diffusely tortuous . The mediastinal and hilar contours are otherwise similar in appearance . There is minimal upper zone vascular redistribution without overt pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is present . The osseous structures are diffusely demineralized .
    OUTPUT:
    
No radiographic evidence for pneumonia .