Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low leading to crowding of the bronchovascular structures . Bibasilar atelectasis is again noted , left greater than right . Blunting of the left costophrenic angle may be secondary to atelectasis versus a trace effusion . There is no convincing lobar consolidation , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is unchanged in appearance .
    OUTPUT:
    
Low lung volumes and bibasilar atelectasis .