Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison with the study of ___ , there are definite fractures of the sixth , eighth , and ninth posterior ribs on the right . However , no evidence of pneumothorax . Continued hyperexpansion of the lungs with probable atelectatic changes at the bases . No evidence of vascular congestion or definite consolidation .
    OUTPUT:
    
Right rib fractures .