Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no effusion or pneumothorax . The cardiomediastinal silhouette is within normal limits . Tortuosity descending thoracic aorta is noted . Old healed anterior rib fractures and degenerative changes at the shoulders are also seen . There is a mid left clavicular fracture , the acuity of which is difficult to assess on this single view .
    OUTPUT:
    
No acute cardiopulmonary process . Mid left clavicular fracture , potentially chronic , however the acuity of which is uncertain based on this single view and clinical correlation suggested regarding need for additional imaging .