Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Improved aeration from the prior exam . Opacification of the right lower lung with silhouetting of the right hemidiaphragm , consistent with right lower lobe pneumonia and / or atelectasis . Small - to - moderate right pleural effusion , largely unchanged . Interval resolution of the left pleural effusion . Interval resolution of pulmonary edema . No pneumothorax . Stable cardiomediastinal silhouette . Stable position of the right - sided central venous catheter and the left pleural drain .
    OUTPUT:
    
1 . New probable right lower lobe pneumonia . 2 . Small - to - moderate right pleural effusion , stable since ___ .