Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , effusion , or pneumothorax . There is scarring or atelectasis in the right perihilar region . Heart size is normal . Imaged osseous structures are intact . Sternotomy wires and surgical clips are seen in the anterior mediastinum . Degenerative changes are seen in the spine .
    OUTPUT:
    
No acute intrathoracic process .