Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta remains mildly tortuous with aortic knob calcifications again demonstrated . The pulmonary vascularity is not engorged . The hilar contours are stable , with no evidence of pulmonary vascular engorgement . Mild left basilar atelectasis is noted . There is no pneumothorax . Multiple old left - sided rib fractures are again present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .