Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left pacemaker with right atrial and right ventricular leads is appropriately positioned . The patient is status post midline sternotomy and CABG . There is mild pulmonary vascular engorgement . The lungs are otherwise clear . Mild - to - moderate cardiomegaly is unchanged . There are no pleural effusions . No pneumothorax is seen . Aortic calcifications are noted . The mediastinal contours are normal .
    OUTPUT:
    
1 . Mild pulmonary vascular engorgement . 2 . Unchanged mild - to - moderate cardiomegaly .