Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen left - sided chest wall pacing device is no longer visualized . Cardiomediastinal silhouette is within normal limits . Streaky right basilar opacity is noted . Elsewhere , lungs are clear . No acute osseous abnormalities .
    OUTPUT:
    
Streaky right basilar opacity , similar to prior , likely atelectasis though infection is not entirely excluded .