Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . The lungs are well - expanded . There is no focal consolidation concerning for pneumonia . The upper abdomen is unremarkable . Mild degenerative changes are present in the thoracic spine .
    OUTPUT:
    
No evidence of pneumonia or pleural effusion .