Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Port - A - Cath terminates in the superior vena cava , making a loop along its mid course , as seen previously . The cardiac , mediastinal and hilar contours appear unchanged . There is no focal parenchymal opacity . The left costophrenic sulcus is slightly blunted , so there may be a trace pleural effusion . No pneumothorax is seen .
    OUTPUT:
    
Possible trace left - sided pleural effusion , but essentially unremarkable examination .