Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar silhouettes are unchanged . There is likely streaky bibasilar atelectasis . Lungs are otherwise clear without focal consolidation , pleural effusions , or pneumothorax . Calcified aortic arch and mild to moderate degenerative changes of the thoracic spine are noted .
    OUTPUT:
    
No evidence of focal consolidation concerning for pneumonia .