Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Lungs are clear without effusion or pneumothorax . Cardiomediastinal silhouette appears normal . There is a subtle deformity of the right posterolateral eighth rib , which is unchanged from prior exam . No acute displaced rib fractures are identified . Right AC joint arthropathy is again noted . No free air below the right hemidiaphragm . No definite compression fractures are seen within the imaged spine .
    OUTPUT:
    
No injury seen . If strong clinical concern for rib fracture , consider dedicated rib series .