Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate clear lungs with no evidence of pneumonia . The cardiac and mediastinal contours are normal . A right chest wall port with the catheter terminating in the mid-to - low SVC is unchanged . Subacute left lower rib fractures are seen , which appear partially healed . No acutely displaced rib fractures are identified . No pneumothorax or pleural effusion is seen .
    OUTPUT:
    
No evidence of pneumonia or acutely displaced rib fractures . Subacute left lower rib fractures . No pneumothorax . These findings were relayed to Dr . ___ as requested .