Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are noted to be slightly decreased . As compared to the prior examination , there has been minimal interval change . The lungs are essentially clear without focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The heart size is top normal . Mediastinal and hilar contours are unchanged .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .