Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left central venous catheter is seen terminating in the lower SVC . Again seen is elevation of the right hemidiaphragm and small pleural effusion and atelectasis at the base of the right lung . The cardiomediastinal silhouette and hilar contours are grossly unchanged . There is no evidence of pneumothorax . Thoracolumbar fusion hardware is seen unchanged in appearance .
    OUTPUT:
    
Small pleural effusion and atelectasis at the base of the right lung .