Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there is worsening mild - to - moderate pulmonary edema . There is no focal airspace opacity . There are small bilateral pleural effusions , which have increased from the prior exam . There is no pneumothorax . The mediastinal contours are normal . The heart is moderately enlarged , and unchanged .
    OUTPUT:
    
1 . Worsening mild - to - moderate pulmonary edema with increased small bilateral pleural effusions . 2 . Unchanged moderate cardiomegaly .