Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . The right hemidiaphgragm is chronically elevated . Bilateral pleural effusions have improved with only small effusions remaining . The cardiomediastinal silhouette and hilar contours are stable . There is no pneumothorax . The right chest pacer leads are unchanged in position . Median sternotomy wires are intact . The mitral annulus is heavily calcified .
    OUTPUT:
    
Interval improvement in bilateral pleural effusions with only small effusions remaining .