Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , the prior left - sided effusion is is unchanged to slightly smaller . Opacities projecting in the right mid lung and right lateral chest wall may represent loculated effusions . Right pleural effusion is small . The known sub - carinal and right hilar masses are not as well evaluated on this chest radiograph . Known large hiatal hernia is unchanged .
    OUTPUT:
    
1 . No change in the left - sided pleural effusion . 2 . Opacities projecting in the right mid lung and right lateral chest wall may represent loculated pleural effusions . 3 . Known sub - carinal and right hilar masses , seen on the prior CT , are not as well evaluated prior radiographs .