Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with mild secondary widening of the cardiomediastinal silhouette and bibasilar and right infrahilar atelectatic changes . There is mild vascular congestion . There is small bilateral ( left greater than right pleural effusions ) . Pacemaker wires end in the right atrium and right ventricle .
    OUTPUT:
    
Bibasilar atelectasis and small pleural effusions . No evidence of pneumonia .