Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes persist , with top - normal heart size , and unchanged cardiomediastinal silhouette compared to the prior study . Bibasilar atelectasis , with elevation of the right hemidiaphragm are stable . No focal consolidation concerning for pneumonia is identified . There is no pleural effusion , pneumothorax , or overt pulmonary edema . Mild pulmonary vascular congestion is noted . A bullet projects over the left chest wall soft tissues , as before .
    OUTPUT:
    
No evidence of pneumonia .