Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The known , nondisplaced rib fractures involving the left ninth and eleventh ribs are not well appreciated on this study . There is no pleural effusion or pneumothorax . There is bibasilar atelectasis , however , there is no focal airspace consolidation worrisome for pneumonia . Heart is normal size . Mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Known left - sided rib fractures are better assessed on the subsequent CT .