Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are noted with secondary crowding of the bronchovascular markings . There is no confluent consolidation . No obvious effusion or pneumothorax on this film with exclusion of the left costophrenic angle . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
No acute cardiopulmonary process .