Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly lower compared to the prior exam with associated bronchovascular crowding . No focal consolidation to suggest focal pneumonia . Probably mild bibasilar atelectasis . No pleural effusion or pneumothorax . Stable appearance of the cardiomediastinal silhouette . Mildly ectatic or tortuous descending aorta is unchanged .
    OUTPUT:
    
Lower lung volumes . No acute cardiopulmonary process .