Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . The lungs are well expanded without focal consolidation concerning for pneumonia . A linear opacity at the left lung base is stable since the prior exam , compatible with scarring . The upper abdomen is unremarkable . Dextroscoliosis centered in the mid thoracic spine is again noted .
    OUTPUT:
    
No acute cardiopulmonary process .