Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Left apical scarring is again seen . The lungs are otherwise clear . There is no pneumothorax or effusion . Multiple old right anterior rib fractures are identified as well as old left anterior rib fractures . No acute osseous abnormality is identified .
    OUTPUT:
    
Evidence of prior bilateral healed anterior rib fractures . Please note that there is no definite acute fracture based on these non-dedicated exams ; however , if desired , dedicated rib series can be performed .