Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . An old healed rib fracture is again seen on the left . No pneumothorax , pulmonary edema , or pleural effusion . No focal consolidations are seen .
    OUTPUT:
    
No acute cardiopulmonary process . No rib fracture seen .