Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities are explained by atelectasis and small pleural effusion . This has improved on the right side and is unchanged on the left side . Moderate cardiomegaly is stable with no sign of pulmonary edema . There is no pneumothorax . Left sided atrioventricular pacemaker is in adequate position .
    OUTPUT:
    
1 . Mild bibasilar atelectasis and pleural effusion have improved on the right side . 2 . Moderate cardiomegaly is stable without signs of pulmonary edema .