Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . Mediastinal contours are stable . There is mild pulmonary edema , slightly worse compared to the prior study . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary edema , slightly worsened in interval .