Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , pleural effusion or pneumothorax . Cardiomediastinal silhouette is within normal limits . There are known left - sided rib fractures which are better assessed on the dedicated rib series performed on the same date .
    OUTPUT:
    
1 . Known left rib fractures , better assessed on the dedicated rib series . 2 . Clear lungs .