Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided Port - A - Cath terminates in unchanged position . No pneumothorax is identified . There is probably a small left pleural effusion . The right hilar opacity is stable . New pigtail catheter terminates in the left lower lung .
    OUTPUT:
    
No evidence of pneumothorax . Decreased left pleural effusion .