Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker is noted with leads terminating in the right atrium and right ventricle . Heart size is mildly enlarged . The aorta is tortuous and calcified . There are perihilar hazy opacities with vascular indistinctness , compatible with mild pulmonary edema . Patchy opacities at the lung bases may reflect compressive atelectasis , though infection can not be completely excluded . There are likely small bilateral pleural effusions . No pneumothorax is present . Clips in the right upper quadrant denote prior cholecystectomy . A stent is imaged within the right / mid upper abdomen .
    OUTPUT:
    
Mild congestive heart failure . Small bilateral pleural effusions . Bibasilar patchy opacities , possibly atelectasis , though infection is not completely excluded .