Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead pacemaker is in unchanged position with leads in the expected position of the right ventricle and right atrium . A right internal jugular central venous catheter terminates in the region of the cavoatrial junction . There is new left pleural effusion and retrocardiac opacity likely reflecting atelectasis .
    OUTPUT:
    
Stable positioning of pacemaker leads . No pneumothorax .