Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright radiograph of the chest demonstrates low lung volumes . The cardiomediastinal silhouette is within normal limits . There is a linear opacity in the right lung base that likely represents atelectasis . There is no definite consolidation or pleural effusion . Surgical clips are noted in the bilateral axilla .
    OUTPUT:
    
Low lung volumes . No definite consolidation .