Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear bilaterally with no masses or lesions identified . There is no pleural effusion or pneumothorax . There is mild flattening of the diaphragms bilaterally . The pleural surfaces are within normal limits . There are no osseous lytic or blastic lesions suspicious for metastasis . There is evidence of an old right lateral rib fracture .
    OUTPUT:
    
No evidence of malignancy or infection .