Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On a bedside , semi-upright chest radigraph , the cardiomediastinal silhouette has the expected postoperative appearance . Lung volumes are low . There is no pulmonary edema or pneumothorax . Moderate , dependent right pleural effusion and adjacent atelectasis are slightly larger since the prior study . Bibasilar atelectasis is unchanged .
    OUTPUT:
    
Normal postop chest . Stable left lower lobe atelectasis . Slight increase , moderate right pleural effusion and ajacent atelectasis .