Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The aorta is diffusely calcified and tortuous . There is mild pulmonary edema with perihilar haziness and vascular indistinctness . No large pleural effusion or pneumothorax is present , however the left costophrenic angle is excluded from the field of view . More focal patchy left basilar opacity could reflect atelectasis but infection or aspiration is not excluded . No acute osseous abnormalities detected .
    OUTPUT:
    
Mild pulmonary edema . Patchy left basilar opacity may reflect atelectasis but infection or aspiration can not be excluded in the correct clinical setting .