Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest provided . Lung volumes are low . Partially imaged hardware in the lumbar spine is again noted . There is mild bibasilar atelectasis . No focal consolidation concerning for pneumonia . No effusion or pneumothorax . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
No signs of pneumonia . Mild bibasilar atelectasis .