Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable , with mild cardiomegaly . The bilateral hilar within normal limits . Lungs are hyperinflated but clear without focal consolidation . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No evidence of pneumonia