Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are well expanded and clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . No displaced rib fracture is identified , although the inferior most left lower costal margin is not imaged .
    OUTPUT:
    
Normal chest radiographs . No displaced rib fracture identified , although the inferior most left lower costal margin is not completely imaged . If clinically desired , dedicated rib series with a BB marker at site of patient 's symptoms could be performed .