Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pleural effusion or pneumothorax . The cardiac silhouette is top normal . The mediastinal and hilar contours are unremarkable . There is a fracture of the posterior lateral right 7th rib of indeterminate age but there appears to be slight surrounding callus indicating that it is likely at least subacute . Underlying atelectasis is seen without definite focal consolidation . No evidence of free air is seen beneath the diaphragms . Some degenerative changes are seen along the spine .
    OUTPUT:
    
Right posterior lateral 7th rib fracture of indeterminate age , but suggestion of some surrounding at slight callus suggests that this is most likely at least subacute . Correlate with history and pain at this location . Underlying mild streaky opacity may be due to atelectasis . No evidence of free air beneath the diaphragms .