Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , lung volumes remain low , but there is no focal consolidation , pleural effusion , or pneumothorax . Slight elevation of the right hemidiaphragm is chronic . Mild bibasilar atelectasis . Cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No focal consolidation concerning for pneumonia or pulmonary edema .