Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , which leads to bronchovascular crowding . No focal consolidation is identified . There is chronic scarring at the left lung base . The cardiomediastinal silhouette and hilar contours are stable . There is no pleural effusion or pneumothorax . A right chest dual lead pacemaker is in unchanged position .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .