Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead pacemaker is present , with lead tips over the right atrium and right ventricle . Probable background hyperinflation . There is mild cardiomegaly , similar to the prior study . As before , there is slight prominence of the right left pulmonary arteries , which could reflect an element of pulmonary hypertension . The aorta is calcified . On today 's exam , there is upper zone redistribution and mild increased interstitial markings . More confluent opacities are seen in the right upper zone , right and left lung bases . There is increased retrocardiac density , consistent with collapse and / or consolidation , similar to ___ , but slightly more pronounced . Minimal blunting of both costophrenic angles is compatible with small effusions . Possible mild bronchiectasis at the left lung base and in the right suprahilar region . No pneumothorax detected .
    OUTPUT:
    
1 . Mild cardiomegaly , with prominence of the right and left hila , unchanged . 2 . Upper zone redistribution . 3 . Mild increase in interstitial markings , with more focal patchy opacities in right upper zone and both bases . This could represent early alveolar edema . Other causes of multifocal alveolar opacities , such as multifocal pneumonic infiltrates or , less likely hemorrhage , are in the differential . 4 . Probable small pleural effusions . 5 . Increased retrocardiac opacity , slightly more pronounced than on the prior study , consistent with left lower lobe collapse and / or consolidation . 6 . Possible bronchiectasis at the left base and right suprahilar region .