Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device is noted with leads terminating in the right atrium and right ventricle , and region of the coronary sinus . Moderate enlargement of the cardiac silhouette is present , and the aorta is unfolded . There is mild pulmonary vascular congestion , with small bilateral pleural effusions , left greater than right . Patchy opacities at the lung bases likely reflect atelectasis . There is no pneumothorax . Multilevel degenerative changes of the thoracic spine are present . There are clips in the right upper quadrant of the abdomen , which denote prior cholecystectomy .
    OUTPUT:
    
Mild pulmonary vascular congestion with small bilateral pleural effusions , left greater than right . Bibasilar atelectasis .