Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , a very mild improvement in the bilateral pleural effusions . Unchanged moderate cardiomegaly . Persistent mild pulmonary edema . No pneumothorax . Hilar mediastinal structures are normal .
    OUTPUT:
    
Since ___ , very mild improvement in bilateral pleural effusions with unchanged moderate cardiomegaly and mild pulmonary edema .