Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer with the tips in the right atrium and right ventricle . Prior mitral valve repair . Pulmonary vascular congestion has improved . Small to moderate left - sided effusion and small right effusion also improved . Persistent retrocardiac opacity can be atelectasis and effusion . Moderate cardiomegaly . No pneumothorax .
    OUTPUT:
    
Left - sided pacemaker with the tips in standard position . Improved pulmonary edema and effusions .