Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are within normal limits . Pulmonary vascularity appears normal . Lungs are clear of any focal opacities concerning for an infectious process . No pleural effusion or pneumothorax is identified . Bony structures are intact .
    OUTPUT:
    
No change from the prior film and no evidence of acute cardiopulmonary process .