Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is noted with leads terminating in the right atrium , right ventricle , and region of the coronary sinus . The cardiac silhouette size is mildly enlarged but unchanged . Mediastinal and hilar contours are similar with atherosclerotic calcifications noted at the aortic knob . Pulmonary vasculature is not engorged . Patchy opacity within the right lower lobe is essentially new in the interval , and may reflect an area developing infection . Mild atelectasis is also seen in the left lung base . No pleural effusion or pneumothorax is present . There are multilevel moderate degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Patchy right lower lobe opacity is concerning for infection in the correct clinical setting .