Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is noted with leads terminating in the right atrium , right ventricle , and coronary sinus . Mild to moderate cardiomegaly is re - demonstrated . The mediastinal and hilar contours are similar . Lungs remain hyperinflated with relative attenuation of pulmonary vascular markings towards the apices compatible with emphysema . Mild pulmonary edema is new compared to the prior study with more focal bibasilar airspace opacities potentially reflecting atelectasis though infection is not excluded . No large pleural effusion or pneumothorax is identified , with scarring noted in the lung apices . Degenerative changes are noted in both acromioclavicular joints .
    OUTPUT:
    
Mild pulmonary edema , new in the interval , with patchy bibasilar opacities , potentially atelectasis though infection is not excluded . Emphysema .