Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is present . The aorta is diffusely calcified . There is perihilar haziness and vascular indistinctness compatible with mild to moderate alveolar pulmonary edema . No large pleural effusion is demonstrated . There is no pneumothorax . Mild multilevel degenerative changes are present in the thoracic spine .
    OUTPUT:
    
Mild to moderate pulmonary edema .