Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are within normal limits . The pulmonary vascularity is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Deformity of the left 6th rib posteriorly appears to represent a chronic fracture , though is new in the interval . No acutely displaced rib fractures are visualized .
    OUTPUT:
    
No acutely displaced fractures identified . Likely remote fracture of the left posterior 6th rib . No acute cardiopulmonary abnormality . If there is continued clinical concern for an acute rib fracture , then a dedicated rib series is recommended .