Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . The pulmonary vascularity is normal . There is minimal subsegmental atelectasis within the left mid lung field . Remainder of the lungs are clear . No pleural effusion or pneumothorax is visualized . No displaced rib fractures or other acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .