Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . There is a new small right pleural effusion . Lung volumes are low , exaggerating existing mild atelectasis . A left thoracostomy tube is unchanged in position . Superimposed parenchymal fibrosis is again seen . There is no pneumothorax . The heart size is top - normal . Cholecystectomy clips are present .
    OUTPUT:
    
New small right pleural effusion .