Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiographs from ___ , there has been interval improvement of a right upper lobe opacity . However , there is slight worsening of pulmonary edema . There are small bilateral pleural effusions . There are no new focal consolidations . Mild cardiomegaly is stable .
    OUTPUT:
    
1 . Improving opacity in right upper lobe , likely related to asymmetrical edema . 2 . Slight worsening of pulmonary edema with bilateral small pleural effusions .