Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal and lungs are clear . No pleural effusion , pneumothorax or focal airspace consolidation . Heart is normal size . Mediastinal and hilar contours are unremarkable . No displaced rib fractures noted .
    OUTPUT:
    
No rib fracture . If concern for a rib fracture persists , dedicated rib series are recommended . No acute cardiopulmonary abnormality .