Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Low lung volumes are again noted with secondary crowding of the bronchovascular markings . Linear bibasilar opacities are most likely atelectasis . There is no confluent consolidation or effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .