Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port -A - Cath terminates in the mid SVC . Interval decrease in lung volumes with increasing left lower lobe likely atelectasis . Nodular opacity in the right lung is new . This may represent nodular atelectasis or conceivably a site of early infection . Heart size is top normal . No pneumothorax .
    OUTPUT:
    
Slight increase in left lower lobe atelectasis . New nodular opacity in the right lower lobe may reflect nodular atelectasis , or conceivably a site of early infection .