Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , substantial pleural effusion or pneumothorax . Heart size is normal allowing for patient position and technique . Mediastinal silhouette and hilar contours are stable . Right hemidiaphragmatic elevation is again noted .
    OUTPUT:
    
No pneumonia , edema , or pleural effusion .