Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the severity pulmonary edema has improved . Moderate to severe cardiomegaly is stable . A persistent right lower lobe opacity concerning for pneumonia , given the improved edema . No pneumothorax . No change in the continuous left pacemaker leads terminating in the right atrium and right ventricle .
    OUTPUT:
    
1 . Persistent right lower lobe opacity is concerning for pneumonia . 2 . Improved pulmonary edema .