Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mild to moderately enlarged . The aorta is unfolded and diffusely calcified . There is mild pulmonary edema , new in the interval . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities seen .
    OUTPUT:
    
Interval development of mild pulmonary edema .