Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Intact median sternal wires are noted . Numerous mediastinal surgical clips are indicative of prior surgery . Heart size is stable and the lungs are essentially clear . There is no pleural effusion or pneumothorax . The osseous structures are osteopenic and there is multilevel osteophyte formation in the visualized thoracic spine .
    OUTPUT:
    
Clear lungs with no focal consolidation .