Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is noted with single lead terminating in the right ventricle . Moderate to severe cardiomegaly is unchanged . The aortic knob is densely calcified . The mediastinal and hilar contours are unremarkable . There is no pulmonary edema . Focal opacity within the right upper lobe is concerning for an area of infection or aspiration . Retrocardiac patchy opacity could reflect atelectasis . No large pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Focal opacity within the right upper lobe is concerning for an area of infection or aspiration .