Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are normal . The bilateral hila are unremarkable . There is mild lung hyperinflation , unchanged since prior study . Subtle increased opacity of the right peripheral lung apex likely relates to pleuroparenchymal scarring , unchanged from ___ . Otherwise , the lungs are clear . There is no pulmonary vascular congestion . There is no pneumothorax or effusion .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Stable chest x-ray .