Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device with leads terminating in the right atrium and right ventricle is in unchanged position . There is mild cardiomegaly with a left ventricular predominance . Aortic knob calcifications are re- demonstrated . The pulmonary vasculature is not engorged . Patchy right basilar opacity likely reflects atelectasis . No focal consolidation , pleural effusion or pneumothorax is seen . Multilevel degenerative changes are noted within the mid and lower thoracic spine with bridging anterior osteophytes .
    OUTPUT:
    
Minimal right basilar atelectasis . No evidence of congestive heart failure or pleural effusion .