Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual leads from left pectoral pacemaker device through the left transvenous approach end into the right atrium and right ventricle respectively . Aorta is mildly tortuous and mild - to - moderately calcified . Lungs are clear . No opacities concerning for pneumonia or aspiration or pulmonary edema . Heart size is normal . Mediastinal and hilar contours are unremarkable . Opacity along right paratracheal region has been stable since at least ___ . Post sugrical changes are seen in thyroid bed .
    OUTPUT:
    
No pneumonia or pulmonary edema .