Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Swan - Ganz catheter is seen with its tip ending in the right ventricle , out of position . Heart size and mediastinum are unchanged . Bibasilar opacities and bilateral pleural effusions are very minimally improved from prior study . There is no evidence of pneumothorax .
    OUTPUT:
    
Swan - Ganz catheter is seen with its tip ending in the right ventricle , of position . Otherwise no significant change from the prior study .