Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has a known LVAD , unchanged in position compared to the prior study . A single lead pacemaker is also unchanged . A Swan - Ganz catheter is in - situ , the tip appears to be in the right main pulmonary artery . Even allowing for the projection , the heart is mildly enlarged . No definite pleural effusion seen . No pneumothorax seen .
    OUTPUT:
    
No significant interval change when compared to the prior study .