Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . Mild cardiomegaly is present . Thoracic aorta is mildly tortuous with atherosclerotic calcifications noted . Pulmonary vasculature is mildly engorged and the hilar contours are unremarkable . Small bilateral pleural effusions are present with streaky bibasilar airspace opacities , likely atelectasis . No pneumothorax is visualized . There are mild to moderate degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Mild pulmonary vascular congestion with small bilateral pleural effusions and bibasilar atelectasis .