Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , the heart size has decreased . It is still moderately enlarged . The mediastinal contours are normal . An implantable cardiac device is present with the wire in appropriate position . There is mild interstitial prominence and vascular engorgement consistent with very mild pulmonary edema . There is no consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . Mild pulmonary edema . 2 . Moderate cardiomegaly ; since the prior exam , the size of the heart has slightly decreased .