Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , effusion , or pneumothorax . Linear left basilar opacity is compatible with atelectasis . The cardiomediastinal silhouette is within normal limits . Mildly tortuous descending thoracic aorta is noted . No displaced fractures identified .
    OUTPUT:
    
No acute cardiopulmonary process . No visualized fracture of the ribs although if desired , dedicated rib series can be performed for increased sensitivity .