Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . There is no pleural effusion or pneumothorax . An opacity projecting over the spine on the lateral view and the right hilus on the anterior view is unchanged and corresponds to a large osteophyte on prior CT of ___ .
    OUTPUT:
    
No acute intrathoracic process