Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate slightly low lung volumes . The lungs are , however , clear . There is no pneumothorax , vascular congestion , or pleural effusion . Cardiomediastinal silhouette is within normal limits . Mild unfolding of the thoracic aorta is noted , with arch calcifications . Moderate multilevel thoracic spondylosis is present .
    OUTPUT:
    
No evidence of pneumonia .