Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bibasilar opacities which are most likely due to atelectasis in the setting of relatively low lung volumes . The lungs are otherwise clear . There is no pneumothorax . The cardiomediastinal silhouette is within normal limits . No visualized acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary process .