Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a biventricular pacemaker in the left chest wall with leads in the right atrium , right ventricle , and a third lead through the coronary sinus . There is no pneumothorax . Left retrocardiac and right basilar opacities are likely atelectasis . There is mild improvement in pulmonary edema . Cardiomediastinal silhouette is unchanged . There is no focal consolidation or pleural effusions .
    OUTPUT:
    
1 . Biventricular pacemaker / AICD with leads in appropriate positioning . 2 . Improved pulmonary edema .