Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left pectoral pacemaker identified with two intact leads terminating within the right atrium and right ventricle , respectively . Streaky left basilar , retrocardiac opacities are new from ___ . There may be a small left pleural effusion . Lungs are hyperinflated , but otherwise clear . Aside from atherosclerotic calcification in the aortic knob , cardiomediastinal silhouette is normal . Transvenous right atrial ventricular pacer leads are in standard placements . There are no findings of cardiac decompensation .
    OUTPUT:
    
Left lower lobe peribronchial opacification due to small pneumonia or recent substantial aspiration . Probable COPD . No evidence of cardiac decompensation .