Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs again demonstrating right pleural drain and the expected postoperative appearance of the mediastinum . The right lower lobe opacity is less distinct than prior radiograph and appears smaller , likely representing resolving atelectasis . There is no new focal opacity . Bilateral small pleural effusions are unchanged . There is no pneumothorax .
    OUTPUT:
    
1 . Right lower lobe opacity most likely represents atelectasis . 2 . Bilateral small pleural effusions are unchanged .