Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiographs obtained ___ , no significant changes are appreciated . Lungs are fully expanded and clear without consolidations or suspicious pulmonary nodules . No pleural abnormalities . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal .
    OUTPUT:
    
No radiographic evidence of pneumonia or other acute cardiopulmonary abnormalities .