Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Midline sternotomy wires again noted . Bibasilar atelectasis and probable small pleural effusions are again noted without significant interval change . Heart size is stable . Prominence of the mediastinum is unchanged . No pneumothorax . Bony structures are intact . Clips project over the right scapula .
    OUTPUT:
    
No significant change . Persistent bibasilar atelectasis and probable small bilateral pleural effusions .