Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild bibasilar opacities are explained by atelectasis and small pleural effusion . This is unchanged since the previous exam . The heart is moderately enlarged and stable with left - sided pacemaker with leads in right atrium and ventricle . There is no pneumothorax .
    OUTPUT:
    
The exam is unchanged since yesterday . 1 . Moderate cardiomegaly is stable without sign of pulmonary edema . 2 . Small bibasilar opacities are explained with unchanged atelectasis and pleural effusion .