Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate - to - severe cardiomegaly is unchanged . The aorta remains diffusely calcified . There are diffuse alveolar opacities compatible with moderate pulmonary edema . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Moderate pulmonary edema .