Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are no visible rib fractures . There is no pleural effusion or pneumothorax . Again noted is a concave appearance of the right costophrenic angle , which is a normal variant in young thin women . Also stable is the asymmetric density of the breast tissue .
    OUTPUT:
    
1 . No evidence of rib fractures . 2 . Stable appearance of asymmetric breast tissue .