Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph is obtained . The lungs appear clear bilaterally without focal consolidation , effusion , or pneumothorax . A left fifth rib fracture seen on CT is not evident on this chest radiograph . Cardiomediastinal silhouette appears normal .
    OUTPUT:
    
No acute findings . Please refer to CT chest from outside hospital for further details .