Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval placement of a right pigtail catheter with tip at the right lung base . There has been interval improvement of the right - sided pleural effusion . There is still bibasilar atelectasis and possible left - sided pleural effusion . Port - A - Cath still remains in good position . The cardiomediastinal and hilar contours are stable .
    OUTPUT:
    
1 . New pigtail catheter with tip at the right lung base . 2 . Improved right pleural effusion .