Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild interstitial edema and tiny bilateral pleural effusions have not changed . The heart , mediastinal and hilar contours are normal . Opacity of the right hemidiaphragm and lung base is concerning for possible pneumonia . Deep brain stimulator battery packs are unchanged bilaterally .
    OUTPUT:
    
Stable interstitial edema and tiny bilateral pleural effusions . Right lung base opacity concerning for possible pneumonia .