FINDINGS:
Compared with the prior study, a new right-sided Port-A-Cath tip projects at
 the cavoatrial junction.  Prominent pericardial fat pads are unchanged. 
 Bibasilar atelectasis is new.  Faint opacity overlying the left upper lobe is
 new since .  No evidence of pneumothorax.  Nodular opacity
 projecting over the right posterior fifth rib may represent summation of
 shadows, as there is no correlate on the recent chest CT of .

IMPRESSION:
Faint opacity overlying the left upper lobe is new since  and may indicate
 a developing infection, given the clinical history.