Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size is borderline . Mediastinal silhouette within normal limits . No chf , focal infiltrate , effusion , or pneumothorax . Although not tailored for osseous evaluation , no displaced rib fracture is appreciable .
    OUTPUT:
    
No acute pulmonary process identified . No rib fracture identified on these lung technique films .