Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided IJ central venous catheter is again seen , terminating in the right atrium . The patient is status post aortic valve replacement . There is persistence of small bilateral pleural effusion , with a very similar morphology when compared to the prior examination . There is probably related atelectasis . No definite consolidative process is seen . No evidence of pneumothorax .
    OUTPUT:
    
Persistent small bilateral pleural effusions .