Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with bibasilar opacities which are likely atelectasis . Superiorly , the lungs are clear . The cardiomediastinal silhouette is within normal limits . Mild mid thoracic dextroscoliosis is noted . No acute osseous abnormalities . Degenerative changes partially visualized at the left shoulder .
    OUTPUT:
    
Low lung volumes without definite acute cardiopulmonary process .