Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky atelectasis at the lung bases . No focal consolidation is identified . Spinal hardware appears in unchanged positions . The cardiomediastinal silhouette and hilar contours are stable . There is slight blunting of the costophrenic angles bilaterally , which may be related to chronic pleural thickening or tiny pleural effusions . A left chest battery device is again noted , likely a vagal nerve stimulator .
    OUTPUT:
    
Streaky atelectasis of the lung bases . No focal consolidation .