Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . No prior . The lungs are clear of focal consolidation , effusion , or pneumothorax . Cardiac silhouette is at upper limits of normal . Median sternotomy wires . Posterior left seventh and eighth rib fractures are identified , which are not necessarily acute given suggestion of some absorption of the fracture sites ; however , clinical correlation is suggested . No definitely acute displaced rib fractures identified .
    OUTPUT:
    
No definite acute cardiopulmonary process . Posterior left seventh and eighth rib fractures , which may be recent but not necessarily acute ; however , clinical correlation is suggested .