Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate mild interstitial edema , improved from to prior imaging on ___ . There is no pleural effusion . There is mild cardiomegaly which is stable from prior imaging . Pacer is seen in left axillary position with intact leads in the expected course to the right atrium and right ventricle .
    OUTPUT:
    
Mild pulmonary edema , improved since prior imaging .