Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . No acute osseous abnormality is identified . There is no free air under the diaphragm . A healed left posterior sixth rib fracture is noted .
    OUTPUT:
    
No pneumonia , effusion or edema .