Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest demonstrate interval increase in size of right pleural effusion since the prior study . There is also increase in degree of peribronchial cuffing , consistent with mild pulmonary edema . The heart size is difficult to evaluate due to large right pleural effusion , but does not appear significantly different from the prior study . A large right upper mediastinal mass is unchanged , and compatible with thyroid mass as seen on recent prior CTA . No pneumothorax .
    OUTPUT:
    
Interval increase in right pleural effusion and mild pulmonary edema . Stable right mediastinal mass .