Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Relatively low lung volumes are seen with secondary crowding of the bronchovascular markings . Bibasilar opacities , more conspicuous than the left may be due to secondary atelectasis . Known oblong density at the right lung base is again seen and is partially covered by overlying lead and is therefore difficult to assess for interval change . The cardiomediastinal silhouette has not definitely changed . Left chest wall dual - lead pacing device is seen , similar compared to ___ .
    OUTPUT:
    
Low lung volumes without definite superimposed acute cardiopulmonary process .