Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright view of the chest was provided . The lungs are clear bilaterally . No focal consolidation , effusion or pneumothorax is seen . The heart size appears grossly within normal limits though not optimally assessed . The mediastinal contour is normal . No acute displaced rib fractures are identified .
    OUTPUT:
    
No acute findings . If there is strong clinical concern for rib fracture , recommend dedicated rib series to further assess .