Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval insertion of pectoral transvenous pacemaker with tips terminating in right atrium and right ventricle . No pneumothorax . The lung volume is small . Pulmonary edema is unchanged . The right upper lobe opacity has resolved . No new consolidation . Pleural effusion persists . Bilateral lower lobe atelectasis are unchanged . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
1 . No pneumothorax . 2 . The previously seen right upper lobe opacity has resolved .