Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right dialysis catheter is unchanged in position with the tip terminating in the low SVC . The inspiratory lung volumes are appropriate . Blunting of the left costophrenic angle is unchanged from the prior study consistent with a small left pleural effusion . No right pleural effusion is seen . There is no focal consolidation concerning for pneumonia or pneumothorax . The pulmonary vasculature is not engorged . The cardiomediastinal and hilar contours are unchanged with calcification and tortuosity of the thoracic aorta . No acute osseous abnormality is detected . Surgical clips are re - demonstrated in the left upper abdomen .
    OUTPUT:
    
Small left pleural effusion unchanged from ___ .