Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . The lung fields are clear besides minimal atelectasis at the left lateral costophrenic angle angle . There is no pneumothorax . Hypertrophic changes noted in the spine . Limited assessment of the abdomen is unremarkable . A minimally displaced posterior left seventh rib fracture is noted .
    OUTPUT:
    
1 . No acute cardiopulmonary abnormality . 2 . Left posterior seventh rib fracture is minimally displaced .