Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest reveal chronic changes related to both prior surgery and radiation . There is a stable right perihilar and posterior density which has not changed . There is no new consolidation . Cardiomediastinal silhouette is stable . Post - thoracotomy changes seen on the right . Osseous and soft tissue structures are otherwise unremarkable .
    OUTPUT:
    
No acute intrathoracic process . Stable scarring / post - op changes in the right hemithorax .